A footbridge is suspended from a parabolic support. The function h(x) = - 1/ 25x^2 + 9 represents the height in feet of the support above the walkway, where x = 0 represents the midpoint of the bridge.

a. Graph the function and determine its x-intercepts.

b. What is the length of the walkway between the two supports?

Guest Mar 23, 2017