Respuesta :

gmany

Answer:

b. -3

Step-by-step explanation:

The common difference in an arithmetic sequence:

[tex]d=a_{n+1}-a_n[/tex]

27 - 30 = -3

24 - 27 = -3

21 - 24 = -3

18 - 21 = -3

CORRECT :)

It's constant.

Answer:

b

Step-by-step explanation:

edge2021