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Mathematics 21 Online
OpenStudy (anonymous):

The amount of oil used by a ship traveling at a uniform speed varies jointly with the distance and the square of the speed. The ship uses 29 barrels of oil in traveling 90 miles at 33 mi/h. How many barrels of oil are used when the ship travels 31 miles at 35 mi/h? Round your answer to the nearest barrel, if necessary.

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