6.1: 1, 5, 9, 15, 23, 26, 29

6.2: 1, 3, 9, 13, 28, 34, 39, 41

6.3 (no hwk)

6.4: 1, 3, 9, 11

6.5: 3, 7, 11, 17

6.6: 1, 5, 9, 11, 17, 19, 27, 43, 45, 49

6.7: 1, 3