Given the geometric sequence:
9,\frac{54}{5},\frac{324}{25} \ldots

Find an explicit formula fora_n .

a_n =

Finda_{13} = .

FindS_{13} = .

FindS = . If S is not finite, type DOES NOT EXIST.

Find an explicit formula for

Find

Find

Find

You can earn partial credit on this problem.