Compute the least squares regression line. On average, how many additional feet are added to the braking distance for each additional 100 pounds of weight? Explain. Estimate the average braking distance of all cars weighing 3,000 pounds. The curb weight a in hundreds of pounds and braking distance y in feet, at 50 miles per hour on dry pavement, were measured for five vehicles, with the results shown in the table. 25 27.5 32.5 35 45 y 105 125 140 140 150