Try another version of this question Box 1: Enter your answer as an equation. Example: y=3x^2+1, 2+x+y=3
Box 2: Enter your answer as an integer or decimal number. Examples: 3, -4, 5.5172 Box 3: Select the best answer
An arch is in the shape of a parabola. It has a span of 72 meters and a maximum height of 9 meters.
Find the equation of the parabola (assuming the origin is halfway between the arch's feet).
Determine the height of the arch 18 meters from the center.
Be sure your variables match those in the question `x^2=-144 (y-9)`
Enter DNE for Does Not Exist, oo for Infinity 6.75
meters