Eli treated his sister to lunch while visiting her in Burlington. Their lunch cost $80, and the sales tax in Burlington is 5%. If Eli left a 15% tip on the $80, how much in total did he pay?

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