Snowshine Floors Carpeting is hired to lay down carpet in R rooms of equal size. Snowshine Floor’s fee can be calculated by the Expression **RCLW, **where **R** is the number of rooms, **C** is the cost per square foot of the carpet in dollars, **L **is the length of each room in feet, and **W** is the width of each room in feet. If the customer chooses to use more expensive material for the carpet, which of the factors in the expression would change?

(A) R

(B) C

(C) L

(D) W

Solution:

**Choice B is correct.**

Since, the customer chooses to use more expensive material for the carpet. The impact on the various parameters (variables) will be as follows:

R: The number of rooms remains the same (R remains constant)

C: The cost per square foot in dollars will increase (C will increase)

L: The length of rooms is not altered (L remains constant)

W: The width of rooms is not altered (W remains constant)

Therefore, amongst the various parameters, only C will increase.