Functions: Length and cost
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A power Station and a factory are on opposite sides of a river 60m wide. A cable must be run from the power station to the factory. it costs $25 per meter to run a cable in the river and $20 per meter on land.
a. express the total cost C as a function of x the distance downstream from the power station to the point where the cable touches the land.
b. find the minimum cost
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Solution Summary
Cost of cable line is calculated
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