diff --git a/package-lock.json b/package-lock.json
index d72a0a81..ccf2ff2a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1308,14 +1308,20 @@
       }
     },
     "node_modules/caniuse-lite": {
-      "version": "1.0.30001244",
-      "resolved": "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30001244.tgz",
-      "integrity": "sha512-Wb4UFZPkPoJoKKVfELPWytRzpemjP/s0pe22NriANru1NoI+5bGNxzKtk7edYL8rmCWTfQO8eRiF0pn1Dqzx7Q==",
-      "dev": true,
-      "funding": {
-        "type": "opencollective",
-        "url": "https://opencollective.com/browserslist"
-      }
+      "version": "1.0.30001422",
+      "resolved": "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30001422.tgz",
+      "integrity": "sha512-hSesn02u1QacQHhaxl/kNMZwqVG35Sz/8DgvmgedxSH8z9UUpcDYSPYgsj3x5dQNRcNp6BwpSfQfVzYUTm+fog==",
+      "dev": true,
+      "funding": [
+        {
+          "type": "opencollective",
+          "url": "https://opencollective.com/browserslist"
+        },
+        {
+          "type": "tidelift",
+          "url": "https://tidelift.com/funding/github/npm/caniuse-lite"
+        }
+      ]
     },
     "node_modules/chalk": {
       "version": "4.1.1",
@@ -4980,9 +4986,9 @@
       "dev": true
     },
     "caniuse-lite": {
-      "version": "1.0.30001244",
-      "resolved": "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30001244.tgz",
-      "integrity": "sha512-Wb4UFZPkPoJoKKVfELPWytRzpemjP/s0pe22NriANru1NoI+5bGNxzKtk7edYL8rmCWTfQO8eRiF0pn1Dqzx7Q==",
+      "version": "1.0.30001422",
+      "resolved": "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30001422.tgz",
+      "integrity": "sha512-hSesn02u1QacQHhaxl/kNMZwqVG35Sz/8DgvmgedxSH8z9UUpcDYSPYgsj3x5dQNRcNp6BwpSfQfVzYUTm+fog==",
       "dev": true
     },
     "chalk": {
diff --git a/src/01-functions.js b/src/01-functions.js
index 8d772b6a..fa4b88cd 100644
--- a/src/01-functions.js
+++ b/src/01-functions.js
@@ -9,7 +9,9 @@
  *  alwaysTrue();
  *  //> true
  */
-function alwaysTrue() {}
+function alwaysTrue() {
+return (true)// logs boolean true
+}
 
 /**
  * greet()
@@ -24,7 +26,9 @@ function alwaysTrue() {}
  *  greet("Ian");
  *  //> "Hello, Ian."
  */
-function greet() {}
+function greet(name) {
+return `Hello, ${name}.`//return the string Hello, and the string variable name using ``string interpolation
+}
 
 /**
  * add()
@@ -39,7 +43,10 @@ function greet() {}
  *  add(10, 20);
  *  //> 30
  */
-function add() {}
+function add(a , b) {
+  number = (a + b)//intiated variable assigned to the sum of number a & number b
+  return(number)// return the number variable
+}
 
 /**
  * multiply()
@@ -54,7 +61,10 @@ function add() {}
  *  multiply(2, 5);
  *  //> 10
  */
-function multiply() {}
+function multiply( a, b) {
+  number = a*b//intiated variable assigned to the product of number a & number b
+  return(number)// return the number variable
+}
 
 /**
  * average()
@@ -74,7 +84,10 @@ function multiply() {}
  *  average(10, 6);
  *  //> 8 // 10 + 6 = 16; 16/2 = 8;
  */
-function average() {}
+function average(a , b) {
+  number = ((a+b)/2)//intiated variable assigned to the sum of number a & number b divided by 2
+  return(number)//return the number variable
+}
 
 /**
  * averageThree()
@@ -93,7 +106,10 @@ function average() {}
  *  averageThree(10, 11, 19);
  *  //> 10 // 10 + 11 + 19 = 30; 30 / 3 = 10;
  */
-function averageThree() {}
+function averageThree(a,b,c) {
+  number =((a + b + c)/3)//intiated variable assigned to the sum of number a,number b, & number c  divided by 3
+  return(number)// return the number variable
+}
 
 /**
  * compareTypes()
@@ -112,7 +128,12 @@ function averageThree() {}
  *  compareTypes("left", 10);
  *  //> false
  */
-function compareTypes() {}
+function compareTypes(a,b) {
+  if (typeof(a) === typeof(b)){//if the data type of a strictly equal the data type of b
+    return(true)//return the boolean true
+  }else//otherwise
+  return(false)//return the boolean false
+}
 
 /**
  * flipSign()
@@ -131,7 +152,10 @@ function compareTypes() {}
  *  flipSign(50);
  *  //> -50
  */
-function flipSign() {}
+function flipSign(a) {
+  number = (a*(-1))//intiate variable number assigned to the product of variable a & -1
+  return(number)//returns number variable
+}
 
 /**
  * joinStringsWithSpaces()
@@ -151,7 +175,11 @@ function flipSign() {}
  *  joinStringsWithSpaces("left", "right", "up", "down", "away");
  *  //> "left right up down away"
  */
-function joinStringsWithSpaces() {}
+function joinStringsWithSpaces(a, b, c, d, e) {
+  return a+" "+b+ " "+c+" "+d+" "+e
+  //`${a} ${b} ${c} ${d} ${e}`
+  //easier solution
+}
 
 /**
  * getFirstAndLastCharacter()
@@ -168,7 +196,10 @@ function joinStringsWithSpaces() {}
  *  getFirstAndLastCharacter("upwards");
  *  //> "us"
  */
-function getFirstAndLastCharacter() {}
+function getFirstAndLastCharacter(a) {
+  return((a.charAt(0)+(a.charAt(a.length - 1))))
+  //return character at index 0 of string variable a plus the character at the last index of the string variable a
+}
 
 // Do not change the code below.
 module.exports = {
diff --git a/src/02-data-types.js b/src/02-data-types.js
index 79cf96cf..73db67b0 100644
--- a/src/02-data-types.js
+++ b/src/02-data-types.js
@@ -9,7 +9,9 @@
  *  getLengthOfString("down");
  *  //> 4
  */
-function getLengthOfString(str) {}
+function getLengthOfString(str) {
+ return str.length
+}
 
 /**
  * convertToNumber()
@@ -22,7 +24,9 @@ function getLengthOfString(str) {}
  *  convertToNumber("111");
  *  //> 111
  */
-function convertToNumber(val) {}
+function convertToNumber(val) {
+ return ~~val
+}
 
 /**
  * convertToString()
@@ -36,7 +40,9 @@ function convertToNumber(val) {}
  *  convertToString(99);
  *  //> "99"
  */
-function convertToString(val) {}
+function convertToString(val) {
+ return(val.toString())
+}
 
 /**
  * convertToShoutingText()
@@ -49,7 +55,9 @@ function convertToString(val) {}
  *  convertToShoutingText("Hello There");
  *  //> "HELLO THERE"
  */
-function convertToShoutingText(text) {}
+function convertToShoutingText(text) {
+  return text.toUpperCase(text)
+}
 
 /**
  * convertToWhisperText()
@@ -62,7 +70,9 @@ function convertToShoutingText(text) {}
  *  convertToWhisperText("Hello There");
  *  //> "hello there"
  */
-function convertToWhisperText(text) {}
+function convertToWhisperText(text) {
+  return text.toLowerCase(text)
+}
 
 /**
  * checkIfCharacterIsInString()
@@ -79,7 +89,9 @@ function convertToWhisperText(text) {}
  *  checkIfCharacterIsInString("hello there", "a");
  *  //> false
  */
-function checkIfCharacterIsInString(text, character) {}
+function checkIfCharacterIsInString(text, character) {
+ return text.includes(character)
+}
 
 /**
  * isEven()
@@ -95,7 +107,12 @@ function checkIfCharacterIsInString(text, character) {}
  *  isEven(11);
  *  //> false
  */
-function isEven(num) {}
+function isEven(num) {
+  if ((num % 2) === 0){
+  return true
+} else
+return false
+}
 
 /**
  * isOdd()
@@ -111,7 +128,12 @@ function isEven(num) {}
  *  isOdd(11);
  *  //> true
  */
-function isOdd(num) {}
+function isOdd(num) {
+  if ((num % 2) !== 0){
+  return true
+} else
+return false
+}
 
 /**
  * isTruthy()
@@ -127,7 +149,12 @@ function isOdd(num) {}
  *  isTruthy(null);
  *  //> false
  */
-function isTruthy(val) {}
+function isTruthy(val) {
+  if (!!val){
+    return true
+  }else 
+  return false
+}
 
 /**
  * isFalsy()
@@ -143,7 +170,12 @@ function isTruthy(val) {}
  *  isFalsy(" ");
  *  //> false
  */
-function isFalsy(val) {}
+function isFalsy(val) {
+  if (!(!!val)){
+    return true
+  }else 
+  return false
+}
 
 // Do not change the code below.
 module.exports = {
diff --git a/src/03-control-flow.js b/src/03-control-flow.js
index 8f675935..246e4b39 100644
--- a/src/03-control-flow.js
+++ b/src/03-control-flow.js
@@ -14,7 +14,12 @@
  *  isEqual(10, "10");
  *  //> false
  */
-function isEqual(a, b) {}
+function isEqual(a, b) {
+  if (a === b){
+    return true
+  }else
+  return false
+}
 
 /**
  * findLarger()
@@ -28,7 +33,12 @@ function isEqual(a, b) {}
  *  findLarger(19, 7);
  *  //> 19
  */
-function findLarger(a, b) {}
+function findLarger(a, b) {
+if(a > b){
+  return a
+}else
+return b
+}
 
 /**
  * findLargerOrTie()
@@ -45,7 +55,14 @@ function findLarger(a, b) {}
  *  findLargerOrTie(0, 0);
  *  //> "tie"
  */
-function findLargerOrTie(a, b) {}
+function findLargerOrTie(a, b) {
+if(a == b){
+  return("tie")
+}else if(a > b){
+  return a
+}else 
+return b
+}
 
 /**
  * positiveNegativeOrZero()
@@ -65,7 +82,14 @@ function findLargerOrTie(a, b) {}
  *  positiveNegativeOrZero(1);
  *  //> "Positive"
  */
-function positiveNegativeOrZero(a) {}
+function positiveNegativeOrZero(a) {
+  if(a === 0){
+    return "Zero"
+  }else if (a < 0){
+    return "Negative"
+  }else if (a > 0)
+  return "Positive"
+}
 
 /**
  * aroundTheWorldGreeting()
@@ -86,7 +110,14 @@ function positiveNegativeOrZero(a) {}
  *  aroundTheWorldGreeting();
  *  //> "Hello World"
  */
-function aroundTheWorldGreeting(language) {}
+function aroundTheWorldGreeting(language) {
+  if (language === "spanish"){
+    return "Hola Mundo"
+   }else if (language === "german"){
+   return "Hallo Welt"
+ }else
+   return "Hello World"
+}
 
 /**
  * aroundTheWorldGreetingWithSwitch()
@@ -109,8 +140,18 @@ function aroundTheWorldGreeting(language) {}
  *  aroundTheWorldGreetingWithSwitch();
  *  //> "Hello World"
  */
-function aroundTheWorldGreetingWithSwitch(language) {}
-
+function aroundTheWorldGreetingWithSwitch(language) {
+  switch(language){
+    case "spanish":
+      return "Hola Mundo";
+      break;
+      case "german":
+        return "Hallo Welt";
+        break;
+        default:
+          return "Hello World"
+}
+}
 /**
  * calculateLetterGrade()
  * ---------------------
@@ -128,7 +169,18 @@ function aroundTheWorldGreetingWithSwitch(language) {}
  *  calculateLetterGrade(99);
  *  //> "A"
  */
-function calculateLetterGrade(grade) {}
+function calculateLetterGrade(grade) {
+  if(grade >= 90){
+    return "A"
+  }else if(grade < 90 && grade >= 80){
+    return "B"
+  }else if(grade < 80 && grade >= 70){
+    return "C"
+  }else if (grade < 70 && grade >= 60){
+    return "D"
+  }else 
+  return "F"
+}
 
 /**
  * animalCounts()
@@ -146,7 +198,12 @@ function calculateLetterGrade(grade) {}
  *  animalCounts("pig", 1);
  *  //> "1 pig"
  */
-function animalCounts(animal, numberOfAnimals) {}
+function animalCounts(animal, numberOfAnimals) {
+  if (numberOfAnimals === 1){
+    return `${numberOfAnimals} ${animal}`
+  }else
+  return `${numberOfAnimals} ${animal}s`
+}
 
 /**
  * evenOrOdd()
@@ -163,7 +220,12 @@ function animalCounts(animal, numberOfAnimals) {}
  *  evenOrOdd(48);
  *  //> "Even"
  */
-function evenOrOdd(a) {}
+function evenOrOdd(a) {
+   if ((a% 2) !== 0){
+  return "Odd"
+} else
+return "Even"
+}
 
 /**
  * evenOrOddWithTernary()
@@ -179,7 +241,9 @@ function evenOrOdd(a) {}
  *  evenOrOddWithTernary(8);
  *  //> "Even"
  */
-function evenOrOddWithTernary(a) {}
+function evenOrOddWithTernary(a) {
+  return ((a% 2) !== 0) ? "Odd": "Even";
+}
 
 // Do not change any code below this line.
 module.exports = {
diff --git a/src/04-arrays.js b/src/04-arrays.js
index 5317f7c3..d91b5a3f 100644
--- a/src/04-arrays.js
+++ b/src/04-arrays.js
@@ -10,7 +10,10 @@
  *  createEmptyArray();
  *  //> []
  */
-function createEmptyArray() {}
+function createEmptyArray() {
+  let emptyArray =[]
+  return emptyArray
+}
 
 /**
  * createArrayWithTwoElements()
@@ -24,7 +27,11 @@ function createEmptyArray() {}
  *  createArrayWithTwoElements(true, false);
  *  //> [ true, false ]
  */
-function createArrayWithTwoElements(a, b) {}
+function createArrayWithTwoElements(a, b) {
+  let newArray = []
+  newArray.push(a,b)
+  return newArray
+}
 
 /**
  * getArrayLength()
@@ -37,7 +44,9 @@ function createArrayWithTwoElements(a, b) {}
  *  getArrayLength([ 10, 20, 30 ]);
  *  //> 3
  */
-function getArrayLength(array) {}
+function getArrayLength(array) {
+return array.length
+}
 
 /**
  * getFirstElementOfArray()
@@ -51,7 +60,9 @@ function getArrayLength(array) {}
  *  getFirstElementOfArray([ 10, 20, 30 ]);
  *  //> 10
  */
-function getFirstElementOfArray(array) {}
+function getFirstElementOfArray(array) {
+  return array[0]
+}
 
 /**
  * getLastElementOfArray()
@@ -65,7 +76,9 @@ function getFirstElementOfArray(array) {}
  *  getLastElementOfArray([ null, undefined ]);
  *  //> undefined
  */
-function getLastElementOfArray(array) {}
+function getLastElementOfArray(array) {
+  return array[array.length -1]
+}
 
 /**
  * addElementToEndOfArray()
@@ -79,7 +92,10 @@ function getLastElementOfArray(array) {}
  *  addElementToEndOfArray([ 10 ], 9);
  *  //> [ 10, 9 ]
  */
-function addElementToEndOfArray(array, element) {}
+function addElementToEndOfArray(array, element) {
+  array.push(element)
+  return array
+}
 
 /**
  * removeElementFromEndOfArray()
@@ -92,7 +108,9 @@ function addElementToEndOfArray(array, element) {}
  *  removeElementFromEndOfArray([ 10, 9, 8 ]);
  *  //> 8
  */
-function removeElementFromEndOfArray(array) {}
+function removeElementFromEndOfArray(array) {
+ return array.pop()
+}
 
 /**
  * addElementToFrontOfArray()
@@ -106,7 +124,10 @@ function removeElementFromEndOfArray(array) {}
  *  addElementToFrontOfArray([ 10 ], 9);
  *  //> [ 9, 10 ]
  */
-function addElementToFrontOfArray(array, element) {}
+function addElementToFrontOfArray(array, element) {
+  array.unshift(element)
+  return array
+}
 
 /**
  * removeElementFromFrontOfArray()
@@ -119,7 +140,9 @@ function addElementToFrontOfArray(array, element) {}
  *  removeElementFromFrontOfArray([ 10, 9, 8 ]);
  *  //> 10
  */
-function removeElementFromFrontOfArray(array) {}
+function removeElementFromFrontOfArray(array) {
+  return array.shift()
+}
 
 /**
  * getMiddleElement()
@@ -135,7 +158,10 @@ function removeElementFromFrontOfArray(array) {}
  *  getMiddleElement([ 10, null, "30" ]);
  *  //> null
  */
-function getMiddleElement(array) {}
+function getMiddleElement(array) {
+ // 
+  return array[Math.round((array.length - 1) / 2)]
+}
 
 // Do not change any code below this line.
 module.exports = {
diff --git a/src/05-objects.js b/src/05-objects.js
index 3e97313c..5aa3dd43 100644
--- a/src/05-objects.js
+++ b/src/05-objects.js
@@ -9,7 +9,10 @@
  *  createEmptyObject()
  *  //> {}
  */
-function createEmptyObject() {}
+function createEmptyObject() {
+  oblivion = {}
+  return oblivion
+}
 
 /**
  * createObjectWithValue()
@@ -22,7 +25,12 @@ function createEmptyObject() {}
  *  createObjectWithValue(19);
  *  //> { whateverKey: 19 }
  */
-function createObjectWithValue(val) {}
+function createObjectWithValue(val) {
+  let obj ={}
+  obj = {
+    key : val}
+  return obj
+}
 
 /**
  * createObjectWithKey()
@@ -35,7 +43,11 @@ function createObjectWithValue(val) {}
  *  createObjectWithKey("left");
  *  //> { left: false }
  */
-function createObjectWithKey(key) {}
+function createObjectWithKey(key) {
+  obj= {}
+  obj[key] = key
+   return obj
+}
 
 /**
  * createObjectWithKeyValuePair()
@@ -49,7 +61,11 @@ function createObjectWithKey(key) {}
  *  createObjectWithKeyValuePair("left", "right");
  *  //> { left: "right" }
  */
-function createObjectWithKeyValuePair(key, val) {}
+function createObjectWithKeyValuePair(key, val) {
+  let obj ={}
+  obj[key] = val
+  return (obj)
+}
 
 /**
  * getNameFromObject()
@@ -62,7 +78,9 @@ function createObjectWithKeyValuePair(key, val) {}
  *  getNameFromObject({ name: "Jay" });
  *  //> "Jay"
  */
-function getNameFromObject(object) {}
+function getNameFromObject(object) {
+ return object.name 
+}
 
 /**
  * getAgeFromObject()
@@ -75,7 +93,9 @@ function getNameFromObject(object) {}
  *  getAgeFromObject({ age: 30 });
  *  //> 30
  */
-function getAgeFromObject(object) {}
+function getAgeFromObject(object) {
+  return object.age
+}
 
 /**
  * addValueToObject()
@@ -89,7 +109,11 @@ function getAgeFromObject(object) {}
  *  addValueToObject({ left: true }, false);
  *  //> { left: true, key: false }
  */
-function addValueToObject(object, val) {}
+function addValueToObject(object, val) {
+  object = {
+    key : val}
+  return object
+}
 
 /**
  * addKeyToObject()
@@ -103,7 +127,11 @@ function addValueToObject(object, val) {}
  *  addKeyToObject({ right: false }, "left");
  *  //> { right: false, left: true }
  */
-function addKeyToObject(object, key) {}
+function addKeyToObject(object, key) {
+  
+  object[key] = key
+   return object
+}
 
 /**
  * addKeyValuePairToObject()
@@ -118,7 +146,10 @@ function addKeyToObject(object, key) {}
  *  addKeyValuePairToObject({ up: true }, "left", false);
  *  //> { up: true, left: false }
  */
-function addKeyValuePairToObject(object, key, val) {}
+function addKeyValuePairToObject(object, key, val) {
+  object[key] = val
+  return object
+}
 
 /**
  * deleteKeyFromObject()
@@ -132,7 +163,10 @@ function addKeyValuePairToObject(object, key, val) {}
  *  deleteKeyFromObject({ left: true, right: false }, "left");
  *  //> { right: false }
  */
-function deleteKeyFromObject(object, key) {}
+function deleteKeyFromObject(object, key) {
+  delete object[key]
+  return object
+}
 
 // Do not change any code below this line.
 module.exports = {
diff --git a/src/06-loops.js b/src/06-loops.js
index 1116cc27..f5ec7e8a 100644
--- a/src/06-loops.js
+++ b/src/06-loops.js
@@ -11,7 +11,14 @@
  *  //> 25
  *  (3 + 4 + 5 + 6 + 7 = 25)
  */
-function rangeSum(min, max) {}
+function rangeSum(min, max) {
+  let sum = 0// initate variable sum; assigns sum to interger 0
+  for ( i = min; i <= max; i++){// initiate for loop index equal min int as long as index is less than max int;(i = i+1)
+    sum += i;//sum = sum + the index of intergers within the range of min int and max int
+  }
+  return sum// sum of all intergers with in the range of given numbers
+}
+
 
 /**
  * rangeOdd()
@@ -25,7 +32,14 @@ function rangeSum(min, max) {}
  *  rangeOdd(10, 15);
  *  //> [ 15, 13, 11 ]
  */
-function rangeOdd(min, max) {}
+function rangeOdd(min, max) {
+  let odd =[]// intiate variable "odd" assigning it to an empty array 
+  for ( i = max; i >= min; i --){// initiate for loop index equal max int as long as index is greater than min int;(i = i-1)>0
+ if (i % 2 !== 0)//if the remainder index divided by 2 is not equal to 0
+  odd.push(i)//insert the indexes that fit the condition into the odd array 
+  }
+return odd//return array of odd numbers
+}
 
 /**
  * rangeEveryOther()
@@ -39,7 +53,15 @@ function rangeOdd(min, max) {}
  *  rangeEveryOther(11, 18);
  *  //> [ 11, 13, 15, 17 ]
  */
-function rangeEveryOther(min, max) {}
+function rangeEveryOther(min, max) {
+  let other= []//intiate variable "other" assigning it to an empty array 
+  for(i = min; i <= max; i+= 2){//for loop initiated;index set to min less than equal to max; index set to increment by 2
+    other.push(i)//insert the indexes that fit the condition into the odd array 
+    }
+    return other// returns an array in increasing order of every other element 
+    
+  }
+
 
 /**
  * containsWhileLoop()
@@ -61,7 +83,15 @@ function rangeEveryOther(min, max) {}
  *  containsWhileLoop([ "left", "up", "right" ], "down");
  *  //> false
  */
-function containsWhileLoop(array, target) {}
+function containsWhileLoop(array, target) {
+i = array.length;// assign i to the index of the [] array
+while(i--){// while (i = i - 1) > 0, run until condition is false
+  if (array[i] === target){//if array index is stricly equal to the array element target 
+      return true;// return boolean true
+    }//ends if statement
+  }//ends while loop
+  return false;// return boolean false
+}//ends function
 
 /**
  * containsForLoop()
@@ -83,7 +113,15 @@ function containsWhileLoop(array, target) {}
  *  containsForLoop([ "left", "up", "right" ], "down");
  *  //> false
  */
-function containsForLoop(array, target) {}
+function containsForLoop(array, target) {
+ for (i=0 ;i < array.length; i++ ){//intiate for loop;if index 0 less than length of array increment by 1
+    if (array[i] === target){//if array index is stricly equal to the array element target 
+        return true;// return boolean true
+      }//ends if statement
+    }//ends for loop
+    return false;// return boolean false
+  }//ends function
+
 
 /**
  * targetCount()
@@ -97,7 +135,15 @@ function containsForLoop(array, target) {}
  *  targetCount([ 10, 20, 10, 20, 30 ], 10);
  *  //> 2
  */
-function targetCount(array, target) {}
+function targetCount(array, target) {
+  let counter = 0;
+  for (array[target] of array){
+    if (array[target] == target){
+      counter++;
+    }
+  }
+  return counter
+}
 
 /**
  * firstIndexFound()
@@ -117,7 +163,13 @@ function targetCount(array, target) {}
  *  firstIndexFound([ "left", "right", "left" ], "up");
  *  //> -1
  */
-function firstIndexFound(array, target) {}
+function firstIndexFound(array, target) {
+for(i=0;i <= array.length; i++){
+  if (array[i] === target){
+    return i
+  }
+}return -1
+}
 
 /**
  * lastIndexFound()
@@ -137,7 +189,13 @@ function firstIndexFound(array, target) {}
  *  lastIndexFound([ "left", "right", "left" ], "up");
  *  //> -1
  */
-function lastIndexFound(array, target) {}
+function lastIndexFound(array, target) {
+  for(i= array.length -1 ;i >= 0; i--){//decrement 
+    if (array[i] === target){
+      return i
+    }
+  }return -1
+}
 
 /**
  * timesIndex()
@@ -151,7 +209,15 @@ function lastIndexFound(array, target) {}
  *  //> [ 7 * 0, 10 * 1, 11 * 2 ]
  *  //> [ 0, 10, 22 ]
  */
-function timesIndex(array) {}
+function timesIndex(array) {
+  timesArray = []
+  for (i =0; i < array.length; i++){
+
+  timesArray.push(array[i]*i)
+  }
+  return timesArray
+}
+
 
 /**
  * cumulativeSum()
@@ -165,7 +231,16 @@ function timesIndex(array) {}
  *  //> [ 5, 5 + 2, 5 + 2 + 9 ]
  *  //> [ 5, 7, 16 ]
  */
-function cumulativeSum(array) {}
+function cumulativeSum(array) {
+  let timesArray = []
+  let sum = 0
+  for (i = 0; i < array.length; i++){
+  sum = sum + array[i]
+ // timesArray.push(i += array[array.length + 1])
+ timesArray.push(sum)
+  }
+  return timesArray
+}
 
 // Do not change anything below this line.
 module.exports = {
diff --git a/src/07-even-more-loops.js b/src/07-even-more-loops.js
index 250fde4a..1d1e3e87 100644
--- a/src/07-even-more-loops.js
+++ b/src/07-even-more-loops.js
@@ -12,7 +12,15 @@
  *  shoutForLoop([ "A", "Very", "Happy", "Array" ]);
  *  //> [ "A!", "Very!", "Happy!", "Array!" ];
  */
-function shoutForLoop(array) {}
+function shoutForLoop(array) {
+  let shoutArray = [];
+  let excite;
+  for(i =0; i < array.length; i++){
+   excite = `${array[i]}!`
+    shoutArray.push(excite)
+  }
+  return shoutArray
+}
 
 /**
  * shoutWhileLoop()
@@ -28,7 +36,17 @@ function shoutForLoop(array) {}
  *  shoutWhileLoop([ "A", "Very", "Happy", "Array" ]);
  *  //> [ "A!", "Very!", "Happy!", "Array!" ];
  */
-function shoutWhileLoop(array) {}
+function shoutWhileLoop(array) {
+  let shoutArray = [];
+  let excite;
+  i = 0
+  while(i < array.length){
+   excite = `${array[i]}!`
+    shoutArray.push(excite)
+    i++
+  }
+  return shoutArray
+}
 
 /**
  * shoutForOfLoop()
@@ -44,7 +62,12 @@ function shoutWhileLoop(array) {}
  *  shoutForOfLoop([ "A", "Very", "Happy", "Array" ]);
  *  //> [ "A!", "Very!", "Happy!", "Array!" ];
  */
-function shoutForOfLoop(array) {}
+function shoutForOfLoop(array) {
+for (i of array){//initate for of loop i is the index of array
+  array[array.indexOf(i)] = `${array[array.indexOf(i)]}!`//added ! through string interpolation
+  }
+  return array
+}
 
 /**
  * sumArray()
@@ -57,7 +80,16 @@ function shoutForOfLoop(array) {}
  *  sumArray([ 10, 0, 10, 11 ]);
  *  //> 31
  */
-function sumArray(array) {}
+function sumArray(array) {
+    //variable sum declared and assigned the value 0
+  //variable i is assigned to the length of the array numbers
+let sum = 0, i = array.length;
+// while loop will run until i hit 0
+//i-- represents that if (i = i - 1) > 0, run until condition is false
+while (i--) 
+  sum += array[i]
+return (sum)
+}
 
 /**
  * oddArray()
@@ -70,7 +102,14 @@ function sumArray(array) {}
  *  oddArray([ 11, 15, 20, 22, 37 ]);
  *  //> [ 11, 15, 37 ]
  */
-function oddArray(array) {}
+function oddArray(array) {
+  let odd= [] 
+ for (i=0; i < array.length; i++){
+    if ( array[i] % 2 !== 0)
+    odd.push(array[i])
+ }
+  return (odd)
+}
 
 /**
  * evenArray()
@@ -83,7 +122,14 @@ function oddArray(array) {}
  *  evenArray([ 11, 15, 20, 22, 37 ]);
  *  //> [ 20, 22 ]
  */
-function evenArray(array) {}
+function evenArray(array) {
+  let even = [] 
+ for (i=0; i < array.length; i++){
+    if ( array[i] % 2 === 0)
+    even.push(array[i])
+ }
+  return (even)
+}
 
 /**
  * findSmallest()
@@ -96,7 +142,10 @@ function evenArray(array) {}
  *  findSmallest([ 0, 11, -2, 5 ]);
  *  //> -2
  */
-function findSmallest(array) {}
+function findSmallest(array) {
+  array.sort();
+  return array[0]
+}
 
 /**
  * findLargest()
@@ -109,7 +158,10 @@ function findSmallest(array) {}
  *  findLargest([ 0, 11, -2, 5 ]);
  *  //> 11
  */
-function findLargest(array) {}
+function findLargest(array) {
+  array.sort();
+  return array[array.length -1]
+}
 
 /**
  * findEqual()
@@ -126,7 +178,15 @@ function findLargest(array) {}
  *  findEqual([ 0, 11, -2, 5 ], 9);
  *  //> false
  */
-function findEqual(array, selected) {}
+function findEqual(array, selected) {
+  for (i=0 ;i < array.length; i++ ){//intiate for loop;if index 0 less than length of array increment by 1
+    if (array[i] === selected){//if array index is stricly equal to the array element target 
+        return true;// return boolean true
+      }//ends if statement
+    }//ends for loop
+    return false;// return boolean false
+  }//ends function
+
 
 /**
  * removeDuplicates()
@@ -143,7 +203,15 @@ function findEqual(array, selected) {}
  *  //> [ 1, 11, 2, 3, 4, 9 ]
  */
 
-function removeDuplicates(array) {}
+function removeDuplicates(array) {
+  let duplicates = [];
+  for(i=0;i < array.length; i++){
+    if (!duplicates.includes(array[i])) {//if array does not include the index of array
+      duplicates.push(array[i]);//push excluded indexs tothe duplicate array
+    }
+  }
+  return duplicates
+}
 
 // Do not change any code below this line.
 module.exports = {
diff --git a/src/08-accessing.js b/src/08-accessing.js
index 079908aa..87418c0d 100644
--- a/src/08-accessing.js
+++ b/src/08-accessing.js
@@ -32,7 +32,9 @@
  *  getFirstName(person);
  *  //> "Rachel"
  */
-function getFirstName(person) {}
+function getFirstName(person) {
+  return person.names.first
+}
 
 /**
  * getLastName()
@@ -45,7 +47,9 @@ function getFirstName(person) {}
  *  getLastName(person);
  *  //> "Rojas"
  */
-function getLastName(person) {}
+function getLastName(person) {
+  return person.names.last
+}
 
 /**
  * getAddressStreet()
@@ -58,7 +62,9 @@ function getLastName(person) {}
  *  getAddressStreet(person);
  *  //> "697 Pine Drive"
  */
-function getAddressStreet(person) {}
+function getAddressStreet(person) {
+  return person.address.street
+}
 
 /**
  * getCountOfPhoneNumbers()
@@ -71,7 +77,10 @@ function getAddressStreet(person) {}
  *  getCountOfPhoneNumbers(person);
  *  //> 2
  */
-function getCountOfPhoneNumbers(person) {}
+function getCountOfPhoneNumbers(person) {
+  return person.numbers.length
+  
+}
 
 /**
  * getFirstPhoneNumber()
@@ -87,8 +96,9 @@ function getCountOfPhoneNumbers(person) {}
  *  getFirstPhoneNumber(person);
  *  //> 7185550921
  */
-function getFirstPhoneNumber(person) {}
-
+function getFirstPhoneNumber(person) {
+return person.numbers[0]
+}
 /**
  * getLastPhoneNumber()
  * ---------------------
@@ -103,7 +113,9 @@ function getFirstPhoneNumber(person) {}
  *  getLastPhoneNumber(person);
  *  //> 7185558611
  */
-function getLastPhoneNumber(person) {}
+function getLastPhoneNumber(person) {
+  return person.numbers[person.numbers.length - 1]
+}
 
 /**
  * getFullName()
@@ -116,7 +128,9 @@ function getLastPhoneNumber(person) {}
  *  getFullName(person);
  *  //> "Rachel Eleanor Rojas"
  */
-function getFullName(person) {}
+function getFullName(person) {
+  return `${person.names.first} ${person.names.middle} ${person.names.last}`
+}
 
 /**
  * getCityAndState()
@@ -132,7 +146,9 @@ function getFullName(person) {}
  *  getCityAndState(person);
  *  //> "Staten Island, NY"
  */
-function getCityAndState(person) {}
+function getCityAndState(person) {
+  return `${person.address.city}, ${person.address.state}`
+}
 
 /**
  * getFullAddress()
@@ -148,7 +164,9 @@ function getCityAndState(person) {}
  *  getFullAddress(person);
  *  //> "697 Pine Drive 2A, Staten Island, NY, 10306"
  */
-function getFullAddress(person) {}
+function getFullAddress(person) {
+  return `${person.address.street} ${person.address.unit}, ${person.address.city}, ${person.address.state}, ${person.address.zip}`
+}
 
 /**
  * getFlatObject()
@@ -171,7 +189,29 @@ function getFullAddress(person) {}
       numbers: [7185550921, 7185558611],
     };
  */
-function getFlatObject(person) {}
+function getFlatObject(person) {
+   //create a new object
+   let newList = {}
+  
+   //set its values equal to the original stores values
+
+ newList.first = person.names.first
+ newList.middle = person.names.middle
+ newList.last = person.names.last
+ 
+ 
+ //make copy of the objects key:value  
+ newList.street = person.address.street
+ newList.unit = person.address.unit
+ newList.city = person.address.city
+ newList.state = person.address.state
+ newList.zip = person.address.zip
+newList.numbers =[]
+for(let i =0; i< person.numbers.length; i++){
+ newList.numbers[i] = person.numbers[i]
+}
+  return newList
+}
 
 // Do not change the code below.
 module.exports = {
diff --git a/src/09-word-problems.js b/src/09-word-problems.js
index 2f63d723..f90fc446 100644
--- a/src/09-word-problems.js
+++ b/src/09-word-problems.js
@@ -19,7 +19,23 @@
  *  applyDiscount(1000, 9, true);
  *  //> 700
  */
-function applyDiscount(priceInCents, age, hasMembership) {}
+function applyDiscount(priceInCents, age, hasMembership) {
+  let total = priceInCents
+  if (age <= 10 && (!hasMembership)){
+    total = priceInCents - ((10/100)*priceInCents)
+    return total
+  }else if ((age <= 10) || (age >= 65) && (hasMembership)){
+    total = priceInCents- ((30/100)*priceInCents)
+    return total;
+  } else if ((age >= 65) && (!hasMembership)){
+    total = priceInCents - ((10/100)*priceInCents)
+    return total;
+  } else if (hasMembership){
+    total = priceInCents - ((20/100)*priceInCents)
+    return total;
+  } else
+    return total
+}
 
 /**
  * getCartTotal()
@@ -40,7 +56,14 @@ function applyDiscount(priceInCents, age, hasMembership) {}
     getCartTotal(cart);
  *  //> "$30.00"
  */
-function getCartTotal(products) {}
+function getCartTotal(products) {
+ let totalCost = 0;
+ for (let i = 0; i < products.length; i++) {
+     totalCost += products[i].priceInCents * products[i].quantity
+}
+  return `$${(totalCost/100).toFixed(2)}`// $___.__
+ 
+ }
 
 /**
  * compareLocations()
@@ -80,7 +103,16 @@ function getCartTotal(products) {}
     compareLocations(address1, address2);
     //> "Same city."
  */
-function compareLocations(address1, address2) {}
+function compareLocations(address1, address2) {
+  if (address1.state !== address2.state){
+return "Addresses are not near each other."
+  }else if ((address1.city,address1.state,address1.zip) === (address2.city,address2.state,address2.zip) && (address1.street !== address2.street)){
+    return "Same city."
+  }else if ((address1.street,address1.city,address1.state,address1.zip) === (address2.street,address2.city,address2.state,address2.zip)){
+    return "Same building."
+  }else (address1.state === address2.state)
+    return "Same state."
+}
 
 /**
  * gradeAssignments()
@@ -127,8 +159,23 @@ function compareLocations(address1, address2) {}
     //>   },
     //> ];
  */
-function gradeAssignments(assignments) {}
-
+function gradeAssignments(assignments) {
+  for(i = 0; i < assignments.length;i++){
+  if(assignments[i].kind === "PASS-FAIL" ){
+    if(assignments[i].score.received === assignments[i].score.max){
+     (assignments[i]["status"]= "PASSED")
+    } else 
+      (assignments[i]["status"] = "FAILED")
+  }else if(assignments[i].kind === "PERCENTAGE"){
+    if(assignments[i].score.received/assignments[i].score.max >= 0.8){
+      (assignments[i]["status"] = `PASSED: ${((assignments[i].score.received/assignments[i].score.max)*100).toFixed(1)}%`)
+    }else 
+(assignments[i]["status"] = `FAILED: ${((assignments[i].score.received/assignments[i].score.max)*100).toFixed(1)}%`)
+  }else if(assignments[i].kind === "ESSAY"){
+   assignments[i]["status"] = (`SCORE: ${assignments[i].score.received}/${assignments[i].score.max}`);
+  }  
+}return assignments
+}
 /**
  * createLineOrder()
  * ---------------------
@@ -152,7 +199,22 @@ function gradeAssignments(assignments) {}
     createLineOrder(people);
     //> [ "Ray Anderson", "America Marsh", "Wade Carson", "Patience Patel" ]
  */
-function createLineOrder(people) {}
+function createLineOrder(people) {
+  memberArr = [ ]
+
+  for (let i = 0; i < people.length; i++){
+    if (people[i].hasMembership === true){
+       memberArr.push(people[i].name)
+       } 
+   }
+  for (let j = 0; j < people.length; j++){
+     if (people[j].hasMembership === false){
+       memberArr.push(people[j].name)
+     }
+   } return memberArr
+  }
+  
+//}
 
 module.exports = {
   applyDiscount,