Each cable of a of a suspension bridge is suspended in the shape of a parabola between two towers that are 120 meters apart and rise 20 meters above the roadway. The cables touch the roadway midway between the towers. a) Draw a sketch of the bridge. Locate the origin at the center of the roadway. Label the coordinates of all known points (the bases and the tops of the towers and the origin). b) Write an equation that models the cables. c) What is the height of the cables over the roadway at a distance of 40 meters from the center