Problems 1-30
See Example 1.

Problems 31-42
See Example 2. If you work all of the problems 19-42, you can use Problem 60 as a check on your work.

Problems 43-44
See Example 3.

Problems 45-46
See Example 4.

Problems 47-56
See Example 5.

Note: Homework Hints are given only for the levels 1 and 2 problems. You can also check some sources for homework help on the Internet (see Links, below), or you can call the author at (707) 829-0606 or send an e-mail to: smithkjs@mathnature.com