10. The formula for the volume of a cone is V = rh. Find the rate of change of the

volume if dr/dt is 2 inches per minute and h = 3r when r = 6 inches .

11. A ball is tossed into the air from a bridge and its height y (in feet) above the ground, t

seconds after it is thrown is given by

y =

a ________ How high above the ground is the bridge

b ________ What is the velocity of the ball after 1 second

c. _______ What is the acceleration after 1 second.

d. ________ Using the graph to estimate the maximum height of the ball

12.