3 Section 2.4. Page 76

3.1 problem 1
3.2 problem 2
3.3 problem 3
3.4 problem 4
3.5 problem 5
3.6 problem 6
3.7 problem 11
3.8 problem 12
3.9 problem 13
3.10 problem 14
3.11 problem 15
3.12 problem 16
3.13 problem 17
3.14 problem 18
3.15 problem 19
3.16 problem 20