Question 17

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The function v(r) = √2.3r models the maximum safe speed, v, in miles per hour, at which a car can travel

on a curved road with radius of curvature r, in feet. A highway crew measures the radius of curvature at an

exit ramp on a highway as 420 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 =

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mph