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April 18, 2014

Homework Help: math

Posted by Jane on Thursday, April 26, 2012 at 12:30pm.

Landon is standing in a hole that is 6.7 ft deep. He throws a rock and it goes up into the air, out of the hole, and then lands on the ground above. the path of the rock can be modeled by the equation

y= -0.005x^2 + 0.48x - 6.7, where x is the horizontal distance of the rock, in meters, from Landon and y is the height, in meters, of the rock above the ground. How far horizontally from Landon will the rock land?

I got two answers: 17 and 79; however, I do not know which is x or y, nor horizontal. Please help!

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