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July 6, 2015

Homework Help: calculus

Posted by Liz on Sunday, November 9, 2008 at 5:43pm.

A power station and a factory are on opposite sides of a river 50 feet wide. A power line must be run from the station to the factory. It costs 25 dollars per foot to run the cable in the river and $15 per foot on land. Express the total cost as a function of x, where x represents the distance downstream from the power station to the point where the cable touches land.

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