A toy rocket is launched from the top of a building 115

feet tall at an initial velocity of 248

feet per second.

a) Give the function that describes the height of the rocket in terms of time t.

b) Determine the time at which the rocket reaches its maximum height, and the maximum height in feet.

c) For what time interval will the rocket be more than 825 feet above ground level?

d) After how many seconds will it hit the ground?