To determine Mario's present age based on the information given, we need to set up an equation using the fact that in 7 years, he will be 19 years old.
If Mario is currently \(x\) years old, in 7 years he will be \(x + 7\) years old. According to the problem, this expression will equal 19.
So we can set up the equation:
\[ x + 7 = 19 \]
Thus, the correct response is:
x + 7 = 19