I need help solving this problem:
Tony the star basketball player of a local high school shoots a long shot. The ball has an initial velocity of 18 feet per second. When the ball is released, it is at the same level as the basket. The ball's height, h, as a function of time is given by the equation, "h = -16t squared + v0t + s", where "v0" is the initial upward velocity of the ball and "s" is the initial height. Assuming that Tony never misses a shot, when will the ball go in the basket?

Question

I need help solving this problem: 
Tony the star basketball player of a local high school shoots a long shot. The ball has an initial velocity of 18 feet per second. When the ball is released, it is at the same level as the basket. The ball's height, h, as a function of time is given by the equation, "h = -16t squared + v0t + s", where "v0" is the initial upward velocity of the ball and "s" is the initial height. Assuming that Tony never misses a shot, when will the ball go in the basket?