Question

Khanacademy Unit: Sequences
Which one of them is right?

Answer 1

D

none

Explanation:

-3,-14,-25,-36

a=-3

d=(-14-(-3))=-14+3=-11

`g_(n)=a+(n-1)d\\g_(n)=-3+(n-1)(-11)\\g_(n)=-3-11n+11\\g_(n)=8-11n`

so none of them is correct.

g(1)=8-11(1)=-3

which is correct.