The length of a rectangular box is to be twice it's width, and it's volume is to be 28ft^3. The material for the base costs 40cents/ft^2, the material for the sides costs 30cents/ft^2, and the material costs 35cents/ft^2. Letting x denote the width of the box, find a function in the variable x giving the cost C(x) of constructing the box.
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A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.
The length of a rectangular box is to be twice it's width, and it's volume is to be 28ft^3. The material for the base costs 40cents/ft^2, the material for the sides costs 30cents/ft^2, and the material costs 35cents/ft^2. Letting x denote the width of the box, find a function in the variable x giving the cost C(x) of constructing the box.
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