If a teacher wants to increase a class test average of 62 to 70, what could he or she
do to each student's test score to achieve that?

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