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Car Weight and MPG An ergineer wants to detertirn how the weight of a gas-powered car, x, affocts gas milesge, y. The accompanying data rapresert the wights of various domesfic cars and their miles per gulor in the ofy for the most recent model year. Complete parts (a) through (d) below. Cick here to vew the weight and gas mileseg data. (a) Find the least squares regression lire treatro whight es the epplanatory variable and mies per galion as the retgense tarieble y=1+ (Round the x coettcient to five decinei places as needed. Rourd the contart to one decimal place as reeded)