Multiple Choice
A rectangular box with an open top has a length of x feet, a width of y feet, and a height of z feet. It costs $1.80 per square foot to build the base and $0.45 per square foot to build the sides. Write the cost C of constructing the box as a function of x, y, and z.
A) 
B) 
C) 
D) 
E) 
Correct Answer:
Verified
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