diff --git a/assignments/array-methods.js b/assignments/array-methods.js
index f3862361e..27581a424 100644
--- a/assignments/array-methods.js
+++ b/assignments/array-methods.js
@@ -58,22 +58,42 @@ 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 = [];
-console.log(fullNames);
+   runners.forEach(function(runner){
+     fullNames.push(`${runner.first_name} ${runner.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 = [];
-console.log(firstNamesAllCaps);
+runners.map(function(runner){
+  firstNamesAllCaps.push(`${runner.first_name} ${runner.last_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 = [];
+runners.filter(function(runner){
+  runnersLargeSizeShirt.push(runner.shirt_size==="L")
+    
+})
 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;
-console.log(ticketPriceTotal);
+let ticketPriceTotal = runners.reduce((acc,currentValue)=>acc+currentValue);
+
+
+  
+  console.log(runners.reduce(ticketPriceTotal) );
+
+ 
+
 
 // ==== Challenge 5: Be Creative ====
 // Now that you have used .forEach(), .map(), .filter(), and .reduce().  I want you to think of potential problems you could solve given the data set and the 5k fun run theme.  Try to create and then solve 3 unique problems using one or many of the array methods listed above.
diff --git a/assignments/callbacks.js b/assignments/callbacks.js
index cb72e70c9..adbc6c229 100644
--- a/assignments/callbacks.js
+++ b/assignments/callbacks.js
@@ -40,22 +40,35 @@ const items = ['Pencil', 'Notebook', 'yo-yo', 'Gum'];
 
 
 function getLength(arr, cb) {
+  return  cb(arr.length);
+
+}
   // getLength passes the length of the array into the callback.
 }
 
 function last(arr, cb) {
+  return cb(arr.length -1);
   // last passes the last item of the array into the callback.
 }
 
 function sumNums(x, y, cb) {
+  
+  return cb (x + y);
   // sumNums adds two numbers (x, y) and passes the result to the callback.
 }
 
 function multiplyNums(x, y, cb) {
+  let total= x*y;
+  return cb(total)
   // multiplyNums multiplies two numbers and passes the result to the callback.
 }
 
 function contains(item, list, cb) {
+     for(let i =0 ; i<list.length;i++){
+       if(list[i]===item){
+         return cb(true);
+       }
+     }
   // contains checks if an item is present inside of the given array/list.
   // Pass true to the callback if it is, otherwise pass false.
 }