AC=A, C, equals Round your answer to the nearest hundredth.

Aball is thrown at an initial height of 7 feet with an initial upward velocity at 27 ft/s. the balls height h (in feet) after t seconds is give by the following. h- 7 27t -16t^2 find the values of t if the balls height is 17ft. round your answer(s) to the nearest hundredth