I do not remember how to do this please help!

Answer:
The correct option is B.
Step-by-step explanation:
Consider the given synthetic division problem.
[tex]2|\overline{1\quad 7\quad -18}[/tex]
We need to find the quotient of this problem.
2 | 1 7 -18
2 18
------------------------------------
1 9 0
--------------------------------------
The bottom line represent the quotient and last element of bottom line represent remainder.
Quotient = x+9
Reminder = 0
Therefore, the correct option is B.