This question is on a math worksheet called 'Factored form of a quadratic function' Question typed out:
A rock is thrown upward from the edge of a bridge and onto a road that is 10 feet below the bridge. The function h(x)= -x^2 + 3x + 10 gives the height, h, in feet, the rock travels in x seconds from the time it was thrown. When will the rock hit the road.