Answer
12 is the answer
36inch - 2 feet
72inch - 4 feet
144inch - 8 feet
18 X 2 = 36
1 + 1 = 2
18 x 4 = 72
1 x 4 = 4
18 x 8 = 144
1 x 8 = 8
Answer:
u
Step-by-step explanation:
it is undefined because its a vertical line.
