I have to be away from class this afternoon, so you’ll want to do some reading (sections 20B.2, 20B.3, 20C, and 20D), then complete the following questions.
Exercise 20B.2 questions 1 and 3
Exercise 20B.3 questions 1 and 3
Exercise 20C questions 1, 3, and 4
Exercise 20D questions 1 and 3