I have a 72 in math. I’m trying to bring it up but can’t figure how. I just don’t understand any. So please if you know ANY of these. I would really appreciate it.

When george started his current job, his employer told him that at the end of the first year, he would receive two vacation days. after each year worked, his number of vacation days will double up to five work weeks (25days) of payed vacation. how many vacation days will he have in 4 years