Height of a Ball A ball thrown straight up into the air has height −16x2 + 80x feet after x seconds.
(a) Graph the function in the window
[0, 6] by [−30, 120].
(b) What is the height of the ball after 3 seconds?
(c) At what times will the height be 64 feet?
(d) At what time will the ball hit the ground?
(e) When will the ball reach its greatest height? What is that height?
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