Question

HELP!! IM BEING TIMED!

What is the iterative rule for this geometric sequence?
2/9, 2/3, 2, 6, ...

A.) an = 2/9 • 3^n
B.) an = 3(2/9)^n-1
C.) an = 2/9 • 3^n-1
D.) an = 3(2/9)^n

Answer 1

Answer: D

Explanation:

2/3 divided by 2/9 = 3

a n = a 1 ⋅ r^( n − 1)

an = (2/9) * 3^(n-1)