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Mathematics 14 Online
OpenStudy (anonymous):

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)

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