Suppose that a ball is thrown from the top of a 104-foot building. The function h(t)=-16t^(2)+48t+104 models the height in feet, h, of the ball seconds, t, after it is thrown. (If you can solve this I'd be so grateful and vote you Brainliest)

a) Find the zero(s) of the function. {You may use fractions or decimals. Use a comma to separate values, if necessary} - Answer Format: The zero(s) of the function:__________

b) If we assume that ground level means h=0, when does the ball hit the ground? - Answer Format: The ball hits the ground after _______ seconds

c) Find the time(s) the ball will be 209 feet above ground. {You may use fractions or decimals. Use a comma to separate values, if necessary} - Answer Format: The ball is 209 feet above ground after ______ seconds

d) The ball will be at its highest point after t=2.75 seconds. Find the height of the ball at that time. Answer Format: The height of the ball after 2.75 seconds is ______ feet