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 = –0.000471x² + .837x 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?

Question

anonymous · Answer

-The bridge is about 1,777.07 ft. above the river, and the length of the bridge above the arch is about 888.54 ft.
-The bridge is about 371.85 ft. above the river, and the length of the bridge above the arch is about 1,777.07 ft.
-The bridge is about 371.85 ft. above the river, and the length of the bridge above the arch is about 888.54 ft.
-The bridge is about 1,777.07 ft. above the river, and the length of the bridge above the arch is about 371.85 ft.