10. [-/1 Points] DETAILS LARCALC11 1.5.061. MY NOTES ASK YOUR TEACHER A 25-foot ladder is leaning against a house, as shown in the figure below. 25 ft it 2 sec If the base of the ladder is pulled away from the house at a rate of 2 feet per second, the top will move down the wall at a rate given by the following equation, where x is the distance between the base of the ladder and the house, and r is the rate in feet per second. 2x r = V 625 - X2 ft/sec (a) Find the rate r when x is 7 feet. (b) Find the rate / when x is 15 feet. (c) Find the limit of r as x approaches 25 from the left. Need Help? Read It Watch It