Use Summation Notation to Write the Sum $$0.9 + 3.6 + 14.4 + \ldots + 921.6$$

Multiple Choice

Use summation notation to write the sum.? $$0.9 + 3.6 + 14.4 + \ldots + 921.6$$ ?

A) $\sum _ { n = 1 } ^ { 8 } 0.9 ( 4 ) ^ { n + 1 }$
B) $\sum _ { n = 1 } ^ { 6 } ( 4 ) ^ { n - 1 }$
C) $\sum _ { n = 1 } ^ { 7 } 0.9 ( 4 ) ^ { n - 1 }$
D) $\sum _ { n = 1 } ^ { 8 } 0.9 ( 4 ) ^ { n }$
E) $\sum _ { n = 1 } ^ { 6 } 0.9 ( 4 ) ^ { n - 1 }$