Question

Find the next three terms of the arithmetic sequence.
a) 9, 12, 15, ... b) 288, 252, 216, ...

Answer 1

For a) The pattern seems to be adding up by three, so you do that to find the next three terms: 18, 21, 24

For b) The pattern is subtracting by 36, so subtract by 36 three more times to get: 180, 144, and 108

Sorry if I made any mistakes, currently on mobile.

Answer 2

a) 18,21,24

b)180, 144, 108

Explanation: