Their are 165 doners last year. Find the numbers of doners this year using each of the expressions. Do you get the same number with each of the expressions?

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