a car travel 30 miles for 30 minutes. the car then stops at a service station for 10 minutes. the car continues for another 20 minutes at a constant speed of 45 mph. draw the distance-time graph for the car.

a car travel 30 miles for 30 minutes the car then stops at a service station for 10 minutes the car continues for another 20 minutes at a constant speed of 45 m class=