Please test all your programs carefully and include all the test cases
with your program. You must have at least 3 check-expect tests for each expression and function that takes different data.
Exercises 2 (1 pt), 3 (3 pts), 4 (3 pts), 10 (5 pts) in Ch. 1. In exercise 10 it's fine to implement just tall and wide, and not square.
Exercises 14 (5 pts, define cube-surface as well), 15 (3 pts), 16 (3 pts), 19 (4 pts), 21 (4 pts), 22 (4 pts) in Section 2.1 In exercise 19 it's fine to implement just tall and wide, and not square.