Savannah loves to talk on her cell phone . she has $100 in her budget to pay this month's cell phone bill. her cell phone plan is $20 plus $0.10 per minute of usage .what is the maximum number of minutes she can talk this month ?

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