help me please the question is in the image

Answer:
As
[tex]g(x)+f(x) = 2x+3[/tex]
Thus, option B is correct.
Step-by-step explanation:
Given
[tex]g(x) + f(x) = (9x+1) + (-7x+2)[/tex]
[tex]= 9x+1 -7x + 2[/tex]
[tex]= 2x + 3[/tex]
As
[tex]g(x)+f(x) = 2x+3[/tex]
Thus, option B is correct.