clarified instructions

callbackPractice.js

@@ -27,7 +27,8 @@ and what you should write is the sayHi function that makes the code above work,
 
 var names = ['Tyler', 'Cahlan', 'Ryan', 'Colt', 'Tyler', 'Blaine', 'Cahlan'];
 first(names, function(firstName){
-  console.log('The first name in names is ' + firstName)
+  console.log('The first name in names is ' + firstName);
+  return firstName;
 });
 
 
@@ -36,28 +37,36 @@ first(names, function(firstName){
 
   //Code Here
 
+
+
 last(names, function(lastName){
   console.log('The last name in names is ' + lastName);
+  return lastName;
 });
 
 
 
-// 3. Write a function called multiply that multiplies two numbers using a callback function.
+// 3. Write a function called multiply that multiplies two numbers. Invoke the callback with the result of the multiplication. 
 
   //Code Here
 
 
+
 multiply(4, 3, function(answer){
   console.log('The answer is ' + answer); //should console.log 12
 })
 
 
 
 // 4. Write a function called contains that checks if a name exists in an array. 
-// If it does, return true using the callback, if not return false.
+// If it does, invoke the callback with true as an argument. 
+// If the name does not exist, invoke the callback with false as an argument.
 
   //Code Here 
 
+
+
+
 contains(names, 'Colt', function(result){
   if(result === true){
     console.log('Colt is in the array');
@@ -68,31 +77,36 @@ contains(names, 'Colt', function(result){
 
 
 
-// 5. Write a function called uniq that takes the names array and removes all duplicates and returns 
-// the callback function with the array of unique names.
+// 5. Write a function called uniq that takes the names array and removes all duplicates.
+// Invoke the callback with the modified array as an argument.
+
+  //Code Here
+
 
-    //Code Here
 
 uniq(names, function(uniqArr){
   console.log('The new names array with all the duplicate items removed is ', uniqArr);
 });
 
 
-// 6. Write a function called each that takes in an array of names. For each item, use a callback 
-// function to return the indices and item.
+// 6. Write a function called each that takes in an array of names. For each name in the array, invoke the callback and pass in the name and the name's index as arguments.
 
     //Code Here 
 
+
+
 each(names, function(item, indice){
   console.log('The item in the ' + indice + ' position is ' + item)
 });
 
 
 
-// 7. Write a function called getUserById that looks at the array of user objects (users) and searches for a user by ID 
-// and returns that user.
+// 7. Write a function called getUserById that looks at the array of user objects (users) and searches for a user by ID.
+// When the correct user object is found, invoke the callback with the user object as an argument.
+
+// Code here
+
 
- //Code Here
 
 var users = [
   {