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A ball is thrown vertically upward into the air. If the ball started from a height of 32 feet off the ground, use the formula

A ball is thrown vertically upward into the air. If the ball started from a height of 32 feet off the ground, use the formula to represent the projection of the ball : H=-16t2+7t+32, Where H is the height of the ball after t seconds have passed. Based on this information, answer the following question:

1) When does the ball return to the ground? Please show your work. Thank you.

You must use the quadratic formula to solve this problem.

HINT: the ball reaches the ground when the height equals zero.

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