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

Question 85

Multiple Choice

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


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

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