the function h(x)=1/98x^2 h(x) is the height of part of a rollercoaster track, when x is the horizontal distance in feet from the center of this section of the track the tower that supports the this part of the track are the same height and are 150 feet apart which is the estimate of the height of the tower
since h(x) is symmetric about the y-axis,
h(75) = 1/98 (75^2) = 57 ft