The owner of maumee ford-mercury-volvo wants to study the relationship between the age of a car and its selling price. listed below is a random sample of 12 used cars sold at the dealership during the last year.

car age selling price car age selling price

1 9 8.1 7 8 7.6

2 7 6.0 8 11 8.0

3 11 3.6 9 10 8.0

4 12 4.0 10 12 6.0

5 8 5.0 11 6 8.6

6 7 10.0 12 6 8.0

a. determine the regression equation.

a)

b)

b. estimate the selling price of a 10-year old car (in $000).

c. interpret the regression equation in dollars.

for each additional year, the car decreases $ in value