Grade for Class 8 Assignment

Good job, Cody.

### Study the changes provided

#### Exercise 1

- No crashes, works as expected. 4 points
- When a method accepts `&block`, prefer `block.call` over the `yield` keyword

#### Exercise 2

- No crashes, works as expected. 4 points

#### Exercise 3

- No crashes, works as expected. 4 points

#### Exercise 4

- No crashes, works as expected. 4 points

#### Exercise 5

- No crashes, works as expected. 4 points
- Whitespace and newlines makes code much easier to read :eyeglasses: 

#### Exercise 6

- No crashes, works as expected. 4 points
- Whitespace and newlines makes code much easier to read :eyeglasses: 

#### Exercise 7

- No crashes, works as expected. 4 points
- Prefer `each` iterators over `while` loops whenever possible
- When a method accepts `&block`, prefer `block.call` over the `yield` keyword

#### Total

`4 + 4 + 4 + 4 + 4 + 4 + 4 = 28` :star2: