Aball is thrown from an initial height of 1 meter with an initial upward velocity of 13 m/s. the ball's height h (in meters) after t seconds is given by the following.

h=1+13t-5t^2

find all values of t for which the ball's height is 8 meters.

round your answer(s) to the nearest hundredth.
(if there is more than one answer, use the "or" button.)