X=13; do you need the work? Also for future reference symbolab.com is where I get all my answers.
imma go with my gut and say b :?
Answer:
https://www.flocabulary.com/unit/proportional-relationships/
Step-by-step explanation:
i dont have the answer key but you can highlight this and go to the link
It will come out to a flat number like 10 20 30 40 ect and the counterfeit will have a 1 at the end such as 11 21 31 41.
Hope i Helped
It is the last numbers I'm positive
