Answer:
Any Variable unless we are missing information that you didn't give us
Step-by-step explanation:
m is a variable, and since there is nothing but the single expression m could techincally be anything
You only gave us 3m + 13 which is an expression aka no = sign, but if there is one then that will change things / etc as m will have to be a certian value :D
Hope this helps, have a nice day :))
