Work each problem. See Examples 3 and 4.
Car Speedometer The speedometer of Terry’s Honda CR-V is designed to be accurate with tires of radius 14 in.
(a) Find the number of rotations of a tire in 1 hr if the car is driven at 55 mph.
(b) Suppose that oversize tires of radius 16 in. are placed on the car. If the car is now driven for 1 hr with the speedometer reading 55 mph, how far has the car gone? If the speed limit is 55 mph, does Terry deserve a speeding ticket?
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