Question

15. You live near a bridge that goes over a river. The underside of the bridge is an arch that can be modeled with the function y = –0.000475x² + .817x, where x and y are measured in feet. How high above the river is the bridge (the top of the arch)? How long is the section of bridge above the arch? (1 point) The bridge is about 1720 ft. above the river, and the length of the bridge above the arch is about 860 ft. The bridge is about 351.31 ft. above the river, and the length of the bridge above the arch is about 860 ft. The bridge is about 351.31 ft. above the river, and the length of the bri