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7. A rocket is launched with an initial velocity of 112 meters per second from a launch pad 6 meters off the ground. Its height,

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7. A rocket is launched with an initial velocity of 112 meters per second from a launch pad 6 meters off the ground. Its height, h, after t seconds can be modeled by the function h(t) = -4.9t2 + 112t + 6. a) How long does it take the rocket to reach its maximum height? b) What is the maximum height the rocket attains? c) How long does it take for the rocket to land on the ground

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