Homework should be turned in at the BEGINNING OF CLASS. All problem numbers refer to Tan's book, the required text for the course. You should write up solutions neatly to all problems, making sure to SHOW ALL YOUR WORK. A nonempty subset will be graded. You are strongly encouraged to work on these problems with other classmates, although the solutions you turn in should be your own work.

**Section 4.3**

Problems: 5, 10, 15, 22, 29, 33, 34, 39, 48, 51

**Note:** For problem #29, be sure to explain how you obtained
your answer.

**Section 4.4**

Problems: 7, 15, 21, 26, 35, 41

**Section 4.5**

Problems: 3, 5, 8, 15

**Note:** Word problems can be challenging. Try following the guidelines
laid out on page 357 of the text.