Find the Indicated Sum $$\sum _ { i = 1 } ^ { 4 } \left( - \frac { 1 } { 2 } \right) ^ { i }$$

question 15

Multiple Choice

Find the indicated sum.
- $$\sum _ { i = 1 } ^ { 4 } \left( - \frac { 1 } { 2 } \right) ^ { i }$$

• A) \(- \frac { 1 } { 16 }\)
• B) \(\frac { 5 } { 16 }\)
• C) \(\frac { 15 } { 16 }\)
• D) \(- \frac { 5 } { 16 }\)

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