This is my solution, is it efficient? It looks different than the teacher's, but it works.

const teachers = [ { name: 'Ashley', topicArea: 'Javascript' },

];

const courses = ['Introducing JavaScript', 'JavaScript Basics', 'JavaScript Loops, Arrays and Objects', 'Getting Started with ES2015', 'JavaScript and the DOM', 'DOM Scripting By Example'];

let i = courses.length;

let newTeachers = [ { name: 'James', topicArea: 'Javascript' }, { name: 'Treasure', topicArea: 'Javascript' } ];

function addNewTeachers(newTeachers) { // TODO: write a function that adds new teachers to the teachers array for (let i = 0; i < newTeachers.length; i++){ teachers.push(newTeachers[i])} }

function printTreehouseSummary() { // TODO: fix this function so that it prints the correct number of courses and teachers

for (let i = 0; i < teachers.length; i++) { console.log(${teachers[i].name} teaches ${teachers[i].topicArea}); }

console.log(Treehouse has ${i} JavaScript courses, and ${teachers.length} Javascript teachers); }

addNewTeachers(newTeachers); printTreehouseSummary();