PLEASE HELP! 10 Points!!

Calculate the missing value. round the answer to on decimal place. start with 70, increase it by 21%, and end up with

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

(x-5)1/2+5=2 what is possible solution of this equation