Question 1119176
a concrete bridge is designed with an arch in the shape of the parabola. The road over the bridge is 120 feet long and the maximum height of the arc is 50 feet. Write the equation for the parabolic arch?
<pre>The equation is NOT {{{highlight(cross(y=(1/72)x(x-120)))}}} and NOT {{{cross(y=-(1/72)(x-60)^2)}}} either.