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A small, open-top packing box, similar t...

A small, open-top packing box, similar to a shoebox without a lid, is three times as long as it is wide, and half as high as it is long. Each square inch of the bottom of the box costs $0.80 to produce, while each square inch of any side costs $0.03 to produce. If x represents the number of inches in the width of the box,which of the following functions represents the cost, C, of producing the box?

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