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QUESTION
The function fx= 2.15 (2x2-4x\-6) models the cost, in dollars, of a rug with width x feet. What is the cost of a rug that is 9 feet wide?
The function fx= 2.15 (2x2-4x\-6) models the cost, in dollars, of a rug with width x feet. What is the cost of a rug that is 9 feet wide?
