Ron’s toll pass recorded him entering the tollway at mile 0 at 12:17 PM. He exited at mile 115 at 1:52 PM, and soon thereafter he was pulled over by the state police. “The speed limit on the tollway is 65 miles per hour,” the trooper told Ron. “You exceeded that by more than five miles per hour this afternoon.” “No way!” responded Ron. “I glance at the speedometer frequently, and not once did it read over 65!” How did the trooper use the Mean Value Theorem to support her claim that Ron must have gone more than 70 miles per hour at some point?