Question

What is the recursive rule for this geometric sequence?

1, 3, 9, 27, ...

Enter your answers in the boxes.

an= ? *an-1

a1= ?

Answer 1

Answer: The recursive rule here is to multiply the number by 3

Answer 2

see below

Explanation:

The common ratio is 3 so its:-

an = 3 * a(n-1)

a1 = 1