Answer:
c
Step-by-step explanation:
because it's A.B
C.D.
K=4
add seven on both sides
2x-4y=7
add 4y on both sides
2x=7+4y
divide 2 on both sides
x=7+4y/2
plug that into original equation
2(7+4y/2)-4y-7=0
7 and 4y cancel out
2(2)=0
4=0
6+(5+1)
(5+1)=6
6(6)
6x6= 36
it would be C i think hope this helps
81 inches converted to feet is 6.75 feet