A ball is thrown from an initial helght of 1 meter with an initial upward velocity of 9 m/s. The ball's heighth (in meters) after t seconds is given by the following
h=1+9t-5t^2
Find all values of 1 for which the ball's height is 4 meters.
Round your answer(s) to the nearest hundredth.
(If there is more than one answer, use the "or" button.)