Someone help, plz make sure it’s right will mark brainiest :)

Answer:
17 is the answer.
Step-by-step explanation:
I got this by
g(4)=4n+1
4/4=1 so, g=4+1
but i have to put the 4 some where so,
4*4=16 then, g=16+1
add the 1 to get 17= g
hope this helps