1. 17
2. 34
3. 62
5. 82
6. 10
7. 18
8. 19
9. 91
89=x+1/3(7)
89=x+7/3
267/3=x+7/3
260/3=x
86 2/3=x. Hope it help!
The answer to your question,
If rounded it would be 12.3, if not 12.5 with a repeated.
-Mabel
C would be your answer and here is how you would solve the problem.