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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Definitions:

Marginal Benefit

The additional satisfaction or utility gained by consuming one more unit of a good or service, important for decision-making in consumption and production.

Marginal Benefit

The extra pleasure or benefit gained by an individual from consuming one more unit of a product or service.

Profit-Maximizing Principle

The economic principle that firms operate to achieve the highest possible profit from their operations, by adjusting output levels, pricing, or resource usage.

Marginal Analysis

An examination of the benefits and costs of an additional unit of change in economic decisions.