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OpenStudy (anonymous):
A ball is thrown into the air with the in initial upward velocity of 45 ft/s. It's height (h) in feet after t seconds is given by the function h=- -16t^2+45t+6. After about how many seconds will the ball hit the ground? a. 3 b. 4 c. 5 d. 6
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563blackghost (563blackghost):
I would say A but im not sure
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