diff --git a/assignments/array-methods.js b/assignments/array-methods.js
index f3862361e..4a26dadc2 100644
--- a/assignments/array-methods.js
+++ b/assignments/array-methods.js
@@ -58,21 +58,37 @@ const runners = [
 // ==== Challenge 1: Use .forEach() ====
 // The event director needs both the first and last names of each runner for their running bibs. Combine both the first and last names and populate a new array called `fullNames`. This array will contain just strings.
 let fullNames = [];
+runners.forEach (elements =>{
+  fullNames.push(`${elements.first_name} ${elements.last_name}`)
+});
 console.log(fullNames);
 
 // ==== Challenge 2: Use .map() ====
 // The event director needs to have all the runners' first names in uppercase because the director BECAME DRUNK WITH POWER. Populate an array called `firstNamesAllCaps`. This array will contain just strings.
 let firstNamesAllCaps = [];
+runners.map((Atlas, index) => {
+  firstNamesAllCaps[index] = Atlas.first_name.toUpperCase();
+})
 console.log(firstNamesAllCaps);
 
 // ==== Challenge 3: Use .filter() ====
 // The large shirts won't be available for the event due to an ordering issue. We need a filtered version of the runners array, containing only those runners with large sized shirts so they can choose a different size. This will be an array of objects.
-let runnersLargeSizeShirt = [];
+let = runnersLargeSizeShirt = []
+runnersLargeSizeShirt = runners.filter( largeman => {
+  if (largeman.shirt_size === 'L'){
+    return largeman;
+  }
+
+})
 console.log(runnersLargeSizeShirt);
 
 // ==== Challenge 4: Use .reduce() ====
 // The donations need to be tallied up and reported for tax purposes. Add up all the donations and save the total into a ticketPriceTotal variable.
-let ticketPriceTotal = 0;
+let ticketPriceTotal = [];
+ticketPriceTotal = runners.reduce((totalValue, runner) => {
+  return totalValue + runner.donation;
+}, 0);
+
 console.log(ticketPriceTotal);
 
 // ==== Challenge 5: Be Creative ====
diff --git a/assignments/callbacks.js b/assignments/callbacks.js
index cb72e70c9..19b20ad2b 100644
--- a/assignments/callbacks.js
+++ b/assignments/callbacks.js
@@ -7,7 +7,7 @@ const items = ['Pencil', 'Notebook', 'yo-yo', 'Gum'];
   // GIVEN THIS PROBLEM:
 
   function firstItem(arr, cb) {
-    // firstItem passes the first item of the given array to the callback function.
+    firstItem passes the first item of the given array to the callback function.
   }
 
   // SOLUTION:
@@ -41,24 +41,50 @@ const items = ['Pencil', 'Notebook', 'yo-yo', 'Gum'];
 
 function getLength(arr, cb) {
   // getLength passes the length of the array into the callback.
+  return cb (arr.length);
 }
+getLength(items, function(length){
+  console.log(length);
+});
 
 function last(arr, cb) {
   // last passes the last item of the array into the callback.
-}
+  return cb(arr[arr.length-1]);
+};
+last(items, function(thelastone)
+{
+  console.log(thelastone);
+});
 
 function sumNums(x, y, cb) {
   // sumNums adds two numbers (x, y) and passes the result to the callback.
+  return cb(x, y);
 }
+sumNums(4, 5, function(x, y){
+  console.log(x + y);
+});
 
 function multiplyNums(x, y, cb) {
   // multiplyNums multiplies two numbers and passes the result to the callback.
+  return cb(x, y);
 }
+multiplyNums(4, 5, function(x, y){
+  console.log(x * y);
+});
 
 function contains(item, list, cb) {
   // contains checks if an item is present inside of the given array/list.
   // Pass true to the callback if it is, otherwise pass false.
+  if(list.includes(item)){
+    return cb(true);
+  } else {
+    return cb(false);
+  }
 }
+contains('Pencil', items, function(result){
+  console.log(result);
+});
+
 
 /* STRETCH PROBLEM */
 
diff --git a/assignments/closure.js b/assignments/closure.js
index 4b399c098..4cda80da5 100644
--- a/assignments/closure.js
+++ b/assignments/closure.js
@@ -3,6 +3,22 @@
 // Keep it simple! Remember a closure is just a function
 // that manipulates variables defined in the outer scope.
 // The outer scope can be a parent function, or the top level of the script.
+function sayHello(greeting) {
+  const hello = greeting;
+  const name = 'Jarrod';
+  console.log(`${hello}. How you doinnnn?`);
+
+  function answer() {
+    const whatsup = "What's up"
+    const answer = "I'm doing great man!"
+    console.log(`${whatsup} ${name}, ${answer}`);
+  }
+
+  answer();
+}
+
+console.log(sayHello('yo'))
+
 
 
 /* STRETCH PROBLEMS, Do not attempt until you have completed all previous tasks for today's project files */