The owner of Maumee Ford-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 Can Age (years) Selling Price (5000) 1 9 10.5 2 6 8.6 12 3.1 4 14 3.0 5 7 7.0 11,4 7 7 8.2 12 6.9 9 12 6.9 10 14 2.1 11 5 9.6 12 8.5 PolctureClick here for the Excel Data File a. Determine the regression equation. (Negative amounts should be indicated by a minus sign. Round your answers to 3 decimal places.) b=