- Please help this is a Rational Inequality problem

1. A rock is thrown straight up from the top of a bridge that is 75 ft high with an initial velocity of 32 ft/s. The height of the object can be modeled by the equation s(t) = -16t2 + 32t + 75. Determine the time(s) the ball is lower than the bridge in interval notation.

2. In two or more complete sentences, explain why (-infinity sign, 0) is not included in the solution.