1.6 Chapter 1. First order differential equations. Section 1.7 (population models). Problems at page 82

1.6.1 problem 1
1.6.2 problem 2
1.6.3 problem 3
1.6.4 problem 4
1.6.5 problem 5
1.6.6 problem 6
1.6.7 problem 7
1.6.8 problem 8