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 (years) selling price ($000) car age (years) selling price ($000)1 9 8.1 7 8 7.62 7 6.0 8 11 8.03 11 3.6 9 10 8.04 12 4.0 10 12 6.05 8 5.0 11 6 8.66 7 10.0 12 6 8.0(a) determine the regression equation. (round your answers to 2 decimal places. negative amounts should be indicated by a minus sign.)a = =