Question

Find an explicit rule for the nth term of the sequence. 9, 36, 144, 576, ...

Answer 1

Well if you divide 9 by 36 you get 4. Then 144 by 36 you get 4. Therefore the rule is that you multiply the number by 4. 9x4=36 36x4=144 144x4=576 576x4=2,304. Hope this helps.

Answer 2

The answer is  an = 9 • 4n - 1