A ball is thrown from an initial height of 2 meters with an initial upward velocity of 20 m/s. The…

A ball is thrown from an initial height of 2 meters with an initial upward velocity of 20 m/s. The…
A ball is thrown from an initial height of 2 meters with an initial upward velocity of 20 m/s. The ball’s height h (in meters) after t seconds is given by h=2+20t-
5t^2. find all values of t for which the ball’s height is 12 meters. Round your answers to the nearest tenth of a second.