Posted by **Erica** on Monday, December 6, 2010 at 3:33am.

You need 50 pounds of two commodities costing $1.25 and$1.60 per pound.

a) Verify that the total cost is y=1.25x + 1.60(50 - x), where x is the number of pounds of the less expensive commodity.

b) Find the inverse function of the cost function.

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