Although a football field appears to be flat, some are actually shaped like a parabola so that rain runs off to both sides. the cross section of a field can be modeled by y=−0.000234x(x−160)y=−0.000234x(x−1 60), where xx and yy are measured in feet. what is the width of the field? what is the maximum height of the surface of the field? round your answers to the nearest tenth, if necessary.