Question

Can i help with this?
Landon is standing in a hole that is 5.1 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 = -0.005x2 + 0.41x - 5.1, where x is the horizontal distance of the rock, in feet, from Landon and y is the height, in feet, of the rock above the ground. How far horizontally from Landon will the rock land?

Not sure how i am suppose to do this
A. 66.71 ft
B. 33.35 ft
C. 15.29 ft <--- already picked
D. 7.65 ft

Answer 1

66.71