Mathematics, 21.10.2020 02:01, volleyballfun24

A child throws a penny upward out of a window and watches it fall to the ground. The function f (t) = –16t^2 + t + 10 represents the penny's distance in feet above the ground t seconds after the penny is thrown.
Approximately how many seconds does it take the penny to hit the ground?

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A child throws a penny upward out of a window and watches it fall to the ground. The function f (t)...