Math
posted by Vanessa .
A baseball player hits a baseball into the outfield. The equation h= 0.005x^2 +x+3 give the path of the ball, where (h) is the height and (x) is the horizontal distance the ball travels.
An outfielder catches 3 ft above the ground. How far has the ball traveled horizontally when the outfielder catches it.

to do this, we substitute h = 3 to the equation and solve for x:
h = 0.005x^2 + x + 3
3 = 0.005x^2 + x + 3
0 = 0.005x^2 + x
0 = x(0.005x + 1)
x = 0 (this is extraneous)
x = 1/0.005 = 200 ft
hope this helps~ :) 
Thank you so much!!! I got the first 2 but I didn't have a clue on that