Mathematics

23 July, 22:07

A tennis ball is launched from the ground and follows a parabolic path represented by the equation y=-x2+7x, where x=seconds. At the same time, an arrow is shot from a height of 18 feet and follows a straight path represented by the equation y=-5x+25. Using your graphing calculator, when will the arrow pierce the tennis ball and a what height off of the ground?

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