Suppose that in the year 2010, the cost of a compact car averaged $13500 and that in 2013, the cost averaged $15300. Assuming that the relationship between yearx

xand costy

yis linear, develop a formula for predicting the average cost of a compact car in the future. Let the variablex

xbe the years since 2010. Be sure to use the lower case variablesx

xandy

What do you predict the average cost of a compact car will be in the year 2019?