1. For which of the following situations would a linear function be a reasonable choice for a mathematical model? Explain your choices.

• The success rate of field-goal kicking as a function of distance from the goal post
• The number of people who have heard something as a function of time after the first person is told
• Stopping distance (in a car) as a function of speed

1. You have learned about representing functions with graphs, words, tables of numbers, and with algebraic formulas. Do you have a preference for one or more of these four ways of working with functions? Explain why you have this preference or why it doesn't matter to you which representation you use.