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