Answers to Section 4.3:
42.
44.
46.
60. In the year 2015.
62. 14.27 yr.
Answers to Section 4.4
10.
12.
14.
16.
18. 13/3
20.
22. 2/15
24.
26. 4
28.
30. 200/43
32. no solution
34. 99/31
Section 4.5
Below I only give the approximate solution; you must also give the exact solution (in terms of logs)
10. 5
12. -6.34
14. 0.13
16. no solution
18. 1.54
20. 5