diff --git a/src/functions-and-arrays.js b/src/functions-and-arrays.js
index 3a7dbec41..c89ca5288 100644
--- a/src/functions-and-arrays.js
+++ b/src/functions-and-arrays.js
@@ -1,20 +1,47 @@
 // Iteration #1: Find the maximum
-function maxOfTwoNumbers() {}
-
+function maxOfTwoNumbers(a, b) {
+  if (a > b) {
+    return a
+  } 
+  else {
+    return b
+  }
+}
+console.log(maxOfTwoNumbers);
 
 
 // Iteration #2: Find longest word
 const words = ['mystery', 'brother', 'aviator', 'crocodile', 'pearl', 'orchard', 'crackpot'];
 
-function findLongestWord() {}
-
+function findLongestWord(wordsArray) {
+  if (!wordsArray.length) {
+    return null
+  }
+  let longestWord = ""
+    for (let i = 0; i < wordsArray.length; i++) {
+      if ( wordsArray[i].length > longestWord.length) {
+      longestWord = wordsArray[i]
+      }
+   } 
+return longestWord;
+}
 
+console.log(findLongestWord(words));
 
 // Iteration #3: Calculate the sum
 const numbers = [6, 12, 1, 18, 13, 16, 2, 1, 8, 10];
 
-function sumNumbers() {}
 
+function sumNumbers(arr) {
+  let sum = 0;
+  for (let i = 0; i < arr.length; i++) {
+    if (arr.length > 0) {
+    sum += arr[i];}
+  }
+  return sum;
+}
+
+console.log(sumNumbers([numbers]))
 
 
 // Iteration #3.1 Bonus:
@@ -26,13 +53,38 @@ function sum() {}
 // Level 1: Array of numbers
 const numbersAvg = [2, 6, 9, 10, 7, 4, 1, 9];
 
-function averageNumbers() {}
+
+function averageNumbers(avArr) {
+  if (!avArr.length) {
+    return null
+  }
+  let sum = 0;
+  for (let i = 0; i < avArr.length; i++) {
+    if (avArr.length > 0) {
+    sum += avArr[i];}
+  }
+  
+  return sum / avArr.length;
+}
+console.log(averageNumbers([numbersAvg]));
 
 
 // Level 2: Array of strings
 const wordsArr = ['seat', 'correspond', 'linen', 'motif', 'hole', 'smell', 'smart', 'chaos', 'fuel', 'palace'];
 
-function averageWordLength() { }
+function averageWordLength(wordsChar) {
+if (!wordsChar.length) {
+  return null
+}
+let stringArr = 0;
+for (let i = 0; i < wordsChar.length; i++) {
+if (wordsChar.length > 0) {
+  stringArr += wordsChar[i].length
+  console.log(stringArr);
+}}
+return stringArr/wordsChar.length
+}
+
 
 // Bonus - Iteration #4.1
 function avg() {}
@@ -52,8 +104,11 @@ const wordsUnique = [
   'bring'
 ];
 
+
+
 function uniquifyArray() {}
 
+ 
 
 
 // Iteration #6: Find elements