Question

Khanacademy Unit: Sequences
Which one of them is right?

Answer 1

Answer:

D

none

Step-by-step 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.