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Find the Indicated Sum $\sum _ { i = 1 } ^ { 5 } 2 ( - 3 ) ^ { i }$

Question 251

Multiple Choice

Find the indicated sum. Use the formula for the sum of the first n terms of a geometric sequence.
- $\sum _ { i = 1 } ^ { 5 } 2 ( - 3 ) ^ { i }$

A) $- 366$
B) $- 1230$
C) 75
D) 12

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