The formula $\displaystyle {v}=\sqrt{{{2.3}{r}}}$ models the maximum safe speed, $\displaystyle {v}$, in miles per hour, at which a car can travel on a curved road with radius of curvature $\displaystyle {r}$, in feet. A highway crew measures the radius of curvature at an exit ramp on a highway as 580 feet. What is the maximum safe speed?

For this problem, round your answer DOWN to the nearest whole number. (Think: Why is this type of rounding appropriate for this scenario?)

max safe speed =