Do you mean, 2x?
Anyways, if you were evaluating the function, h(x)=12+2x
You would first plug in x=-5 to the following function…
h(-5)=12+2(-5)
Simplifying this would get you,
h(-5)=12-10=2
So, the answer to the following question would be…
h(-5)=2
I hope this helps