Beginning drivers soon learn that bringing an automobile to a stop requires greater distances for higher speeds. A formula that approximates the stopping distance under normal driving conditions is d = 1.1v + 0.055v2
where v = speed of the auto in miles per hour and d = distance in feet required to bring the auto to a stop.
(a) Find the stopping distance of an auto traveling 15 mph. (Round your answer to the nearest foot.)
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(b) Find the stopping distance of an auto traveling 30 mph. (Round your answer to the nearest foot.)
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