William and stephanie are playing a rather dangerous game of catch on the rooftops of skyscrapers in downtown chicago. william is preparing to throw a tennis ball off the roof of the john hancock center, 1130 feet above street level. stephanie is waiting to catch the ball on the rooftop of the neighboring water tower place, 830 feet above street level. william throws the ball, which leaves his hand with an upward velocity of 46 feet per second, and travels in a parabolic path. stephanie catches the ball exactly 6.0 seconds after it is thrown. create a quadratic function describing the height of the ball above the street level with respect to time.