part a. In the year 2010, the cost of a compact car averaged $14500. In 2013, the cost averaged $16600. Assuming that the relationship between year x and cosy y is linear, develop a formula for predicting the average cost of a compact car in the future. Let the variable X be the years since 2010. Make sure to use lower case variables x and y.

part b. What do you predict the average cost of a compact car will be in the year 2020?

(please show work!)