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Mathematics 17 Online
OpenStudy (anonymous):

a rocket is shot straight into the air at an intial velocity of 120 feet/second. The height of rocket after t seconds is given by the equation h=120t-4t^2. After how many seconds will the rocket reach its maximum height?

OpenStudy (anonymous):

900, 120, 30, or 15 seconds

OpenStudy (anonymous):

15

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