$34.80 because, if you add 15+2+21=58x12.00=696x0.05=34.80
The vertex is located at (-1,-9)
It is 27 you add 10 and 27 which equals 27.
The perimeter of the carpet is determined by its dimensions so the dimensions of the room are irrelevant to the question.
P=2(x+y) where x and y are the dimensions, here x and y equal 9 and 12 ft so
P=2(9+12)
P=2(21)
P=42 ft
2x3x6 = 36 hope this helps!!