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

question 219

Multiple Choice

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

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