I need help please

(n + 2²) n=7
3

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Find the area of the regular hexagon if a side is 20 cm.

You receive 15% of the profit from a car wash how much money do you receive from a profit of 300

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