Question: A ball is thrown directly upward from a height of 6 ft with an initial velocity of 20 ft/sec. The function s(t) = -16t2 +

A ball is thrown directly upward from a height of 6 ft with an initial velocity of 20 ft/sec. The function s(t) = -16t2 + 20t + 6 gives the height of the ball, in feet, t seconds after it has been thrown. Determine the time at which the ball reaches its maximum height and find the maximum height.

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