The following formula models the number of prison inmates, p, in thousands, who are in u. s prisons x years after 1980. p=2x^2+22x+318 find the first year in which the population of u. s. prisons was approximately 1270 thousand people.

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