Math Solutions

(Steps Shown) COST EFFICIENT DESIGN. A cable is to be run from a power plant on one side of a river 900 meters wide to a factory on the other side, 3,000 meters

Question: COST EFFICIENT DESIGN. A cable is to be run from a power plant on one side of a river 900 meters wide to a factory on the other side, 3,000 meters , downstream. The cable will be run in a straight line from the power plant to some point P on the Opposite bank and then along the bank to the factory. The cos: of. running the cable across the water is $5 per meter. while the cost over land is $4 per meter. Let x be the distance from P to the point directly across the rim. from the power plant. Express the cost of installing the cable as a function of x.

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