Answer:

-7, -14, -28, -56, -112, -224

(multiply the term by 2 to get the next term)

12, 17, 22, 27, 32, 37, 42

(add 5 to the term to get the next term)

8, 2, -4, -10, -16, -22, -28

(subtract 6 to the term to get the next term)