Question

The table shows the first three terms of a

geometric sequence. Which of the following is a
formula for f(n) ?

Answer 1

Answer: E

Explanation:

By using substitution we can find the answer is correct or not.

`3(-2)^n\\3(-2)^1\\3(-2)\\-6\\3(-2)^2\\3(4)\\12\\3(-2)^3\\3(-8)\\-24`

as you can see the equation in answer E worked every time