Solve the problem.A ball is thrown upward with an initial velocity of 28 meters per second from a cliff that is  high. The height of the ball is given by the quadratic equation  where h is in meters and t is the time in seconds since the ball was thrown. Find the time it takes the ball to hit the ground. Approximate the answer to one decimal place.

A. 7.4 sec
B. 7.0 sec
C. 7.8 sec
D. 11.4 sec


Answer: A

Mathematics

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