1) Do #13 in the Problems Section of Chapter 20.
2) Do #3 in the Thought Question of Chapter 26.
3) Do #7 in the Thought Problems of Chapter 26.
4) Do #13 in the Problems Section of Chapter 26.
5) Do #14 in the Problems Section of Chapter 26.
6) Do #12 in the Thought Questions of Chapter 27.
7) Do #13 in the Problem Section of Chapter 27.