diff --git a/callbacks/src/giveaway/giveaway.js b/callbacks/src/giveaway/giveaway.js
index 2c92c19..6729a3a 100644
--- a/callbacks/src/giveaway/giveaway.js
+++ b/callbacks/src/giveaway/giveaway.js
@@ -16,7 +16,23 @@
  */
 
 // YOUR CODE HERE:
+function determineCouponRecipients(users, eligibilityCallback) {
+  const couponRecipients = [];
+  let count = 0;
 
+  for (const user of users) {
+    if (eligibilityCallback(user)) {
+      couponRecipients.push(user);
+      count++;
+
+      if (count === 5) {
+        break;
+      }
+    }
+  }
+
+  return couponRecipients;
+}
 // This is the callback function that will be passed to your function
 // This function takes in a single user as an argument
 // This function will return true only if the user is eligible to receive a coupon
diff --git a/callbacks/src/sendCoupons/sendCoupons.js b/callbacks/src/sendCoupons/sendCoupons.js
index cece186..9a6cc47 100644
--- a/callbacks/src/sendCoupons/sendCoupons.js
+++ b/callbacks/src/sendCoupons/sendCoupons.js
@@ -46,6 +46,14 @@ const updateUserCouponSent = (user) => {
  *   - update the user in the database by calling the third callback function
  *  If the user doesn't have a valid phone number, don't do anything for that user
  */
+function sendAllCoupons(users, checkPhoneNumber, printMessage, updateUser) {
+  for (const user of users) {
+    if (checkPhoneNumber(user)) {
+      printMessage(user);
+      updateUser(user);
+    }
+  }
+}
 
 module.exports = {
   canSendCoupon,
diff --git a/callbacks/src/userDatabase/userDatabase.js b/callbacks/src/userDatabase/userDatabase.js
index bf6ab54..608db0f 100644
--- a/callbacks/src/userDatabase/userDatabase.js
+++ b/callbacks/src/userDatabase/userDatabase.js
@@ -9,16 +9,15 @@ const UserDatabase = {
 
   // SOLUTION: this keyword is not bound to the UserDatabase since this was an arrow function
   // SOLUTION: change the arrow function into a normal function
-  addUser: (name, id, phone) => {
-    this.users.push({ name, id , phone, hasCoupon: false, hasUsedCoupon: false});
+  addUser: function(name, id, phone) {
+    this.users.push({ name, id, phone, hasCoupon: false, isEnrolledInRewards: false });
   },
 
   // what is wrong with this function?
-  function loadFromFile : () => {
+  loadFromFile: function() {
     const usersFromFile = require("./usersdb.json");
     this.users = usersFromFile;
-  },
-  
+  }, 
 };
 
 module.exports = UserDatabase;