B I assume, not 100% sure
9 131/250 is 9.524 as a mixed number
Answer:

Step-by-step explanation:
The equation given is 
and also we have that
, thus:

------------
I think the question is missing which variable is defined as
, so I will solve for
since is the only other variable in the equation.
substituting
into
:

and we solve for m:

m is equal to 18.