3. Marilyn hit a golf ball on the ground with her driver. Use the general function for a projectile to write a function

that shows the height in feet of her golf ball as a function

of time. The ball was hit with an initial vertical velocity of

130 feet per second.

h(t) = -16t2 + 130t

a) How long will Marilyn's ball stay in the air?

b) What was the maximum height of the ball?