If a ball is thrown directly upward with a velocity of 48 ft/s, its height (in feet) after t seconds is given by y = 48t 16t2. What is the maximum

If a ball is thrown directly upward with a velocity of 48 ft/s, its height (in feet) after t seconds is given by y = 48t − 16t2. What is the maximum height attained by the ball? (Round your answer to the nearest whole number.)