I want to say it is A because if you simplify it then it should say 36x/6x. I hope this helps! If wrong correct me..
Answer:

Step-by-step explanation:

Mean is the average
So the first mean is 11
The second one is 14.7 so round to 15
15-11 is 4. Hope that is correct
Answer:
J's would be (-5,-4) if J was reflected over the line x=3.