A ball is projected upward from the ground. Its height h, above ground, in feet, can be

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A ball is projected upward from the ground. Its height h, above ground, in feet, can be determined by the equation

 h = -16t2 + 128t

Where t is the number of seconds after the ball is projected. After how many seconds will the ball be 256 ft above ground?

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A Survey of Mathematics with Applications

ISBN: 978-0134112107

10th edition

Authors: Allen R. Angel, Christine D. Abbott, Dennis Runde

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