Help solve for A.

An engineer wants to determine how the weight of a car, x, affects gas mileage, y. The following data represent the weights of various cars and their miles per gallon. Car A B C D E Q Weight (pounds), x 2520 3055 3485 3770 4215 Miles per Gallon, y 28.9 26.7 21.8 22.4 17.3 (a) Find the least-squares regression line treating weight as the explanatory variable and miles per gallon as the response variable. Write the equation for the least-squares regression line. y =_ * + 0 (Round the x coefficient to five decimal places as needed. Round the constant to one decimal place as needed.)