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Find the Indicated Sum i=13(23)i+1\sum _ { i = 1 } ^ { 3 } \left( \frac { 2 } { 3 } \right) ^ { i + 1 }

Question 152

Multiple Choice

Find the indicated sum. Use the formula for the sum of the first n terms of a geometric sequence.
- i=13(23) i+1\sum _ { i = 1 } ^ { 3 } \left( \frac { 2 } { 3 } \right) ^ { i + 1 }


A) 7681\frac { 76 } { 81 }
B) 3827\frac { 38 } { 27 }
C) 8081\frac { 80 } { 81 }
D) 52081\frac { 520 } { 81 }

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