M- 7 = 15

how do i do this?
would it be correct if i do m - 7 + 7 = 15 + 7
m = 22

is this correct? if not how would i do this?

You are correct it is 22

it is correct.

Also, if you want to check your answer...

m-7=15

so 22-7=15

Your answer is right!

Step-by-step explanation:

The domain is the horizontal extent: all real numbers. -∞ < x < ∞.

The range is the vertical extent: all numbers greater than zero. 0 < y < ∞. (The graph never actually touches y=0, but comes arbitrarily close.)