I got lazy so I'm just going to post the equation here, please help?

Working on itts i’m going to need you to me as i go along 1-5

You paid 28.00 for 8 gallons of gasoline. how much would you pay for 15 gallons of gasoline?

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