Ms. ayala had 152 pencils. she divided the number of pencils equally among 13 students. she kept the leftover pencils in her desk. what is the greatest number of pencils ms. ayala could have given each student?

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