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Find a General Term An for the Geometric Sequence a1=15,r=5a _ { 1 } = - \frac { 1 } { 5 } , r = - 5

Question 405

Multiple Choice

Find a general term an for the geometric sequence.
- a1=15,r=5a _ { 1 } = - \frac { 1 } { 5 } , r = - 5


A) an=1515(n1) a _ { n } = - \frac { 1 } { 5 } - \frac { 1 } { 5 } ( n - 1 )
B) an=15+625(n1) a _ { n } = - \frac { 1 } { 5 } + \frac { 6 } { 25 } ( n - 1 )
C) an=15(5) n1a _ { n } = - \frac { 1 } { 5 } \cdot ( - 5 ) ^ { n - 1 }
D) an=(15) n1+625a _ { n } = \left( - \frac { 1 } { 5 } \right) ^ { n - 1 } + \frac { 6 } { 25 }

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