this is neither a geometric nor an arithmetic sequence
add 4, add 6, add 8
Since you have options, I would guess and check
n=2
2^2+2 =6
3(2)-1 = 5 no
(2+1) (2+2) =12 no
Choice A
The answer is
x =<span> <span><span>−3/</span>17</span></span>
There is no figure below.