Answer:
$1782
Step-by-step explanation:
The cost of the carpet is the product of the number of square feet in the area of the floor, and the cost for each square foot.
Area
The area of a rectangle is given by ...
A = LW
For Kaitlin's living room, the area is ...
A = (18 ft)(11 ft) = 198 ft²
Cost
Each of those 198 square feet costs $9 to carpet, so the total cost is ...
carpet cost = ($9/ft²)×(198 ft²) = $1782
It will cost $1782 for the carpet for the living room floor.
