Carpet Master would be cheaper because 6 x 9 would be 54 $$$
Solution:
Given:

Since b and d are nonzero elements, then it is the product of two rational numbers.
Multiplying two rational numbers produces another rational number.
Therefore, the product is a rational expression.
OPTION C is the correct answer.
Answers: 7x^2y^2 -3x+6y
I am not sure how to explain it but here you go