A ball is thrown from an initial height of 6 feet with an initial upward velocity of 31 fts. The ball's height h (in feet) after t seconds is given by the following: h=6+311-167
Find all values of t for which the ball's height is 20 feet.
Round your answer(s) to the nearest hundredth.
(If there is more than one answer, use the "or" button.)
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