Question

What is the eighth term of the geometric sequence whose first three terms are 3, 6 and 12?

Answer 1

First, calculate the common ratio `r` ...

Explanation:

`r=6/3=2`

Using the formula for the nth term of a geometric sequence ...

`a_n=a_1(r)^(n-1)`

`a_8=3(2)^((8-1))=3xx(2)^7=384`

hope that helped