A person standing close to the edge on top of a 56-foot building throws a ball vertically upward. The quadratic function h(t) = – 16t? + 104t + 56 models the ball's height about the ground, h(t), in feet, t seconds after it was thrown. - a) What is the maximum height of the ball? feet b) How many seconds does it take until the ball hits the ground? seconds

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