9. (8.50) The graph below shows the approximate stopping distance for a loaded semi-truck, depending on the speed of the semi-truck when the brakes were applied. Stopping Distance for Semitrucks 350 300 250 200 Stopping Distance (yards) 150 100 50 5 10 15 20 25 30 35 40 45 50 55 60 65 70 Speed (miles per hour) If the semi-truck needed 296 yards to stop, approximately how fast was the semi-truck traveling? 9