Find the 9th term of the sequence described by: A(n)=7+(n-1)(3)

Question

A. 42
B. 9
C. 31
D. 27

Can't seem to find this particular question anywhere on the internet and can't solve it through any of the calculator's I've tried. At the very least I'd like to have the answer out there in case anyone else gets stumped and needs help.

Answer 1

Turns out the answer was 31...

Answer 2

A(9) = 7 + (9-1)(3)
= 7 + 24 = 31