1) Do #13 in the Problems Section of Chapter 18.

2) Do #14 in the Problems Section of Chapter 18.

3) Do #15 in the Problems Section of Chapter 18.

4) Do #17 in the Problems Section of Chapter 18.

5) Do #3 in the Thought Questions of Chapter 19.

6) Do #8 in the Thought Questions of Chapter 19.

7) Do #11 in the Problem Section of Chapter 19.

8) Do #12 in the Problem Section of Chapter 19.