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Find a General Term An for the Geometric Sequence a1=15,r=7a _ { 1 } = - \frac { 1 } { 5 } , r = 7

Question 429

Multiple Choice

Find a general term an for the geometric sequence.
- a1=15,r=7a _ { 1 } = - \frac { 1 } { 5 } , r = 7


A) an=(15) n1+635a _ { n } = \left( - \frac { 1 } { 5 } \right) ^ { n - 1 } + \frac { 6 } { 35 }
B) an=15+17(n1) a _ { n } = - \frac { 1 } { 5 } + \frac { 1 } { 7 } ( n - 1 )
C) an=157n1a _ { n } = - \frac { 1 } { 5 } \cdot 7 ^ { n - 1 }
D) an=15+635(n1) a _ { n } = - \frac { 1 } { 5 } + \frac { 6 } { 35 } ( n - 1 )

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