Solving a word problem using a quadratic equation with irration.. A ball is thrown from an initial height of 3 feet with an initial upward velocity of 35 ft/s. The ball's height / (in feet) after { seconds is given by the following. h= 3+ 351-161 Find all values of f for which the ball's height is 21 feet. Round your answer(s) to the nearest hundredth. (If there is ore than answer, use the "or" button