The graph represents the height y, in feet above the ground of a rock x seconds after it is dropped from a building. Which statement is true? Select each correct answer.
-the rock hits the ground in 45 s.
-the rock rises above 45 ft before falling toward the ground.
-the maximum height of the rock occurs at x=0
-the rock is in the air for 3 s.
-the Maximum height of the rock is 45 ft.
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