Express the Sum Using Summation Notation $\sum _ { k = 1 } ^ { 4 } \left( - \frac { 1 } { 4 } \right) ^ { k }$

question 91

Multiple Choice

Express the sum using summation notation.
- $\sum _ { k = 1 } ^ { 4 } \left( - \frac { 1 } { 4 } \right) ^ { k }$

• A) \(= \frac { 47 } { 256 }\)
• B) \(- \frac { 51 } { 256 }\)
• C) \(\frac { 51 } { 256 }\)
• D) \(\frac { 85 } { 256 }\)

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