A shipping crate has a square base with sides of length x feet, and it is half as tall as it is wide. If the material for the bottom and sides of the box costs $2.75 per square foot and the material for the top costs $1.00 per square foot, express the total cost (in dollars) of material for the box as a function of x.
?

A.
B.
C. ?
D. ?
E.


Answer: A

Mathematics

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