Tim Zulf - #172

Objects:

• Challenge 1
• Challenge 2
• Challenge 3
• Challenge 4
• Stretch

Arrays:

• Challenge 1
• Challenge 2
• Challenge 3
• Challenge 4
• Challenge 5
• Challenge 6

Callbacks:

• function firstItem(arr, cb) {
• function getLength(arr, cb) {
• function last(arr, cb) {
• function sumNums(x, y, cb) {
• function multiplyNums(x, y, cb) {
• function contains(item, list, cb) {
• STRETCH PROBLEM