Find the Indicated Sum $a _ { 1 } = \frac { 1 } { 8 } , r = - 2 ; \text { find } s _ { 13 }$

question 86

Multiple Choice

Find the indicated sum.
- $a _ { 1 } = \frac { 1 } { 8 } , r = - 2 ; \text { find } s _ { 13 }$

• A) \(\frac { 2725 } { 8 }\)
• B) \(\frac { 2729 } { 8 }\)
• C) \(\frac { 1369 } { 4 }\)
• D) \(\frac { 2731 } { 8 }\)

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