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OpenStudy (anonymous):
A small rock falling from the top of a 124-ft-tall building with an initial downward velocity of –30 ft/sec is modeled by the equation h(t) = –16t2 – 30t + 124, where t is the time in seconds. For which interval of time does the rock remain in the air?
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OpenStudy (amistre64):
um, what height is the rock when it hits the ground?
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