(-7,-8) is the center and 8 is the radius.
If you need to simplify the equation it would be:

+2r-2n+7
If not sorry..
Hope This Helps!
Answer:
)0
Step-by-step explanation:
Just simplify by isolating the variable.
To do this, you need to get rid of the coefficient.
This means dividing both sides by 6.
6m / 6 = m
60 / 6 = 10
m = 10 is the answer.