Suppose a Home Improvement Contractor Is Painting the Walls and Ceiling

question 31

Multiple Choice

Suppose a home improvement contractor is painting the walls and ceiling of a rectangular room. The volume of the room is 288 cubic feet. The cost of wall paint is $0.06 per square foot and the cost of ceiling paint is $0.16 per square foot. Let x, y, and z be the length, width, and height of a rectangular room respectively. Identify the room dimensions that result in a minimum cost for the paint and use these dimensions to find the minimum cost for the paint. Round your answer to the nearest cent.

• A) $30.72
• B) $7.68
• C) $9.72
• D) $17.28
• E) $12.80

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