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Algebra 8 Online
OpenStudy (dinorap1):

Please help! I will give medal to best answer! 5. 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=-0.000475x^2+0.851x, where x and y are 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?

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