To find the total amount of fabric that Kimberly bought, we need to add up the lengths of the cotton, polyester, and rayon fabrics.
First, let's convert the measurements to a consistent unit. Since all the measurements are in yards and feet, we need to convert the feet to yards. There are 3 feet in 1 yard. So, 1 foot is equal to 1/3 yard.
The cotton fabric is 2 yards and 1 foot, which is equivalent to 2 + 1/3 = 2 1/3 yards.
The polyester fabric is 7 yards and 2 feet, which is equivalent to 7 + 2/3 = 7 2/3 yards.
The rayon fabric is 9 yards.
Now, we can add up the lengths of the fabrics:
2 1/3 yards (cotton) + 7 2/3 yards (polyester) + 9 yards (rayon) = 18 yards.
Therefore, the total amount of fabric that Kimberly bought is 18 yards.