Homework Help: algebra

Posted by LEE on Saturday, October 20, 2012 at 3:23pm.

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?

Would appreciate if someone could help me..

algebra - LEE, Sunday, October 21, 2012 at 10:18pm
Could someone please explain this question to me.

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