Write a Formula for the General Term, or Nth Term $$\frac { 1 } { 9 } , \frac { 8 } { 9 } , \frac { 64 } { 9 } , \frac { 512 } { 9 } , \ldots$$

Multiple Choice

Write a formula for the general term, or nth term, for the given sequence.
- $$\frac { 1 } { 9 } , \frac { 8 } { 9 } , \frac { 64 } { 9 } , \frac { 512 } { 9 } , \ldots$$

A) $a _ { n } = \frac { 8 n } { 9 }$
B) $a _ { n } = \frac { 8 n - 8 } { 9 }$
C) $a _ { n } = \frac { 8 ^ { n - 1 } } { 9 }$
D) $a _ { n } = \frac { 8 ^ { n } - 1 } { 9 }$