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May 25, 2015

Homework Help: math

Posted by phil on Sunday, November 9, 2008 at 9:13am.

can someone help me with this question. I am completely stuck.

A box with a quare base and top has a volume of 20 meters cubed. The material for the base costs $7.00 per sq. meter, the material for the sides costs $4.00 per sq. meter, and the material for the top costs $2.00 per sq. meter. Express the cost of the materials used to build the box as a function of the width x of the base.

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