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QUESTION
The cost C (in dollars) of building a house is related to the number k of carpenters used and the number e of electricians used by the formula
The cost C (in dollars) of building a house is related to the number k of carpenters used and the number e of electricians used by the formula C=15,000+50k2+60e2
If the cost of the house is fixed at $200,000, find dk/de le=15 and then interpret result.
