Answer:
1/500 is answer.............
The answer is -49 because you multiply by 7.
It is 350% I think, because you are trying to find how many groups of 2 go into 7. So, you have to divide 7 by 2. You get 3.5. 3.5 in percentage form is 350%
The answer is D, x=12. There's a lot of little math involved but hope it helps!!