Simplify the expression. 5 + 8x + 3x -2

Can someone answer it, and plot it, for 20 points and brainliest answer? p.s. they're the same ! : )

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.

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