Question

Which of the following is the formula for the geometric sequence?

1.2, 2.4, 4.8, 9.6,...

Answer 1

A. an = 9.6(1/2)n-1
B. an = 1.2(2)n-1
C. an = 9.6(2)n-1

Again, they are supposed to be: \[a _{n}\]

These problems just really confuse me. Sorry I am posting so much! :/

Answer 2

B

Answer 3

Thanks :)

Answer 4

Don't you have a formula for the nth term of a geometric sequence?

Answer 5

Not that I am sure of.

Answer 6

\[a _{n}=a _{1}(r)^{n-1}\]

Answer 7

Have you ever seen anything like that?