Question

Write an explicit formula for An, the nth term of the sequence 3,9, 27, ...

Answer 1

Step-by-step explanation:

Apparently the common ratio is

3

Step-by-step explanation:

The 2nd term is 3

the 3rd=9=3²

the 4th= 27=3³

To get to the n

th term we will have to multiply n−1

times by 3

Or: tn=3n−1