Please i need help thanks

Bradley hikes 12 miles in 3 hours. in relation to bradley’s hike, which statement describes the expression

For f(x)=2x+3 and g(x)=x^2- 8 find (f+g) (x)

Okay so i didn't get this problem petro bought 8 tickets to a basketball game he paid a total of $200 write an equation to determine whether each ticket cost $26 or $28 so i didn't get this question so yeahyou have a good day.