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Functions: Length and cost

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

Solution Summary

Cost of cable line is calculated