If you had a rectangular prism that had a length of 3 units, a width of 4 units, and a height of 2 units, How many unit cubes would you need for each layer, how many unit cubes would you need to fill the rectanguler prism

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