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May 4, 2015

Homework Help: algebra

Posted by Anonymous on Sunday, May 16, 2010 at 2:34pm.

A ball falls from the top of a roof 320 feet above the ground. The formula h = -16t2 + 16t + 320 described the height of the ball above the ground, h, in feet, t seconds after the fall begins. How long will it take the ball to strike the ground?

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