diff --git a/exercises.js b/exercises.js
index 8b29f5d..17b84b2 100644
--- a/exercises.js
+++ b/exercises.js
@@ -1,6 +1,89 @@
+// Question 1
+const cellphone = {
+  phoneNumber: '3479224333',
+};
+
+// Question 2
+cellphone.model = 'Samsung Galaxy Note';
+
+// Question 3
+cellphone.contacts = [];
+
+// Question 4
+cellphone.contacts.push({ name: 'Devonte', phoneNumber: '3479224313' });
+
+// Question 5
+cellphone.addContact = function(name, phoneNumber) {
+  this.contacts.push({ name, phoneNumber });
+  return `${name} successfully added.`;
+};
+
+// Question 6
+cellphone.addContact('Cielo', '1234567890');
+cellphone.addContact('Mavis', '0987654321');
+cellphone.addContact('Cobalt', '3471234567');
+
+// Question 7
+cellphone.numberOfContacts = function() {
+  return this.contacts.length;
+};
+
+// Question 8
+cellphone.lookUp = function(person) {
+  const result = this.contacts.find((contact) => contact.name === person || contact.phoneNumber === person);
+  return result === undefined ? 'Contact not found.' : result.phoneNumber;
+};
+
+cellphone.addContact('Reuben Ogbonna', '9196219388');
+console.log(cellphone.lookUp('Reuben Ogbonna'));
+
+// Question 9
+cellphone.deleteContact = function(person) {
+  const result = this.contacts.find((contact) => contact.name === person || contact.phoneNumber === person);
+  const deleteIndex = this.contacts.indexOf(result);
+  this.contacts.splice(deleteIndex, 1);
+  return result === undefined ? 'Contact not found.' : `${person} successfully deleted.`;
+};
+
+
+// Question 10
+cellphone.call = function(person) {
+  const result = this.contacts.find((contact) => contact.name === person || contact.phoneNumber === person);
+  return result === undefined ? 'Contact not found.' : `Calling ${result.name} at ${result.phoneNumber}`;
+};
+
+// Question 11
+const makeCellPhone = function (phoneNumber, model) {
+  return {
+    phoneNumber,
+    model,
+
+    addContact(name, phoneNumber) {
+      this.contacts.push({ name, phoneNumber });
+      return `${name} successfully added.`;
+    },
+    numberOfContacts() {
+      return this.contacts.length;
+    },
+    lookUp(person) {
+      const result = this.contacts.find((contact) => contact.name === person || contact.phoneNumber === person);
+      return result === undefined ? 'Contact not found.' : result.phoneNumber;
+    },
+    deleteContact(person) {
+      const result = this.contacts.find((contact) => contact.name === person || contact.phoneNumber === person);
+      const deleteIndex = this.contacts.indexOf(result);
+      this.contacts.splice(deleteIndex, 1);
+      return result === undefined ? 'Contact not found' : `${person} has been successfully deleted`;
+    },
+    call(person) {
+      const result = this.contacts.find((contact) => contact.name === person || contact.phoneNumber === person);
+      return result === undefined ? 'Contact not found' : `Calling ${result.name} at ${result.phoneNumber}`;
+    },
+  };
+};
 
 
 module.exports = {
   cellphone,
-  // makeCellPhone,
+  makeCellPhone,
 };
diff --git a/exercises.test.js b/exercises.test.js
index a9960f7..84f5595 100644
--- a/exercises.test.js
+++ b/exercises.test.js
@@ -1,4 +1,4 @@
-const { cellphone, makeCellPhone } = require(./exercises);
+const { cellphone, makeCellPhone } = require('./exercises');
 
 test('has phoneNumber property of 10 digits', () => {
   expect(cellphone.phoneNumber).toMatch(/\d{10}/);
@@ -37,7 +37,7 @@ test('lookUp works', () => {
 test('deleteContact works', () => {
   cellphone.contacts.push({name: 'Jim Smith', phoneNumber: '9876543210'});
   expect(cellphone.deleteContact('Jim Smith')).toBe('Jim Smith successfully deleted.');
-  expect(cellphone.contacts.none((contact) => contact.name === 'Jim Smith')).toBe(true);
+  expect(cellphone.contacts.some((contact) => contact.name === 'Jim Smith')).toBe(false);
   expect
   expect(cellphone.deleteContact(Math.random().toString())).toBe('Contact not found.');
 });