13. The Parkers are putting new carpet in their
family room. The room is 21 feet by 27
feet. If carpet costs $11.25 per square
yard, how much will the Parkers pay for
the carpet?
A. $708.75
2 of
B. $740.25
C. $2,126.25
D. $6,378.75

The parkers will pay A. $708.75
21 feet by 27 feet is 7 yards by 9 yards (3 feet per yard)
the area of the room is 7 yards * 9 yards = 63 square yards
if the carpet is $11.25 per square yard, multiply that number by the area
11.25 * 63 = 708.75

The scale factor of what ?