Solved 6.1
Solved 7.4 for positive values
Added handling negatives to 7.4
Started on 7.7 going to come back to it later
Finished 8.1 - Deck of cards
8.2 - Extending Employee
8.3 - Jukebox
8.6 - Puzzle Pices
Finished 8.9 - Hash with LinkedList collision buckets