Laura expects 100 - 5 = 95% to show up. Laura expects 220 * 0.95 = 209 guests.
This justifies what answer for what question? Q & A:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Laura is planning her wedding. She expects 220 people to attend the wedding, but she has been told that approximately 5% typically don't show. How many people will go to her wedding?
209