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A toy rocket is launched from the top of a building 144 feet tall at an initial velocity of 231 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 517 feet above ground level?
d) After how many seconds will it hit the ground?

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