1. Draw a sketch.
2. Determine a coordinate system: The road is placed on the x-axis, the y-axis is the perpendicular bisector of the distance between the towers.
3. The equation of the parabola would be:
Plug in the coordinates of the given point (28, 1.44):
4. Now you have the equation of the parabola. The foot of the right tower is at x = 40. Thus the height of the tower is: