Anyone know the answer??

In what organelle does photosynthesis take place?

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base

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