12/18 = x/9
108/18 = x
x = 6
Answer:
the answer should be 1.36$ per pound of potatoes
Checking for each option
Option A:

Substitute w = 10 and check if we'd get 900 as the answer

Option B:

Substitute w = 10 and check if we'd get 900 as the answer

Option C:

Substitute w = 10 and check if we'd get 900 as the answer

Option D:

Substitue w = 10 and check if we'd get 900 as the answer

Answer: Option B
I can you be a little bit clear I don’t really understand the question.