Simplify the Expression $\left( \frac { 2 } { 7 } \right) ^ { - 2 }$

question 218

Essay

Simplify the expression. $\left( \frac { 2 } { 7 } \right) ^ { - 2 }$

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Definitions:

Market

A system or an arena where parties engage in exchange of goods, services, or information.

Positive Externality

A benefit that affects a party who did not choose to incur that benefit, often associated with public goods and services.

Historic Buildings

Structures that hold historical significance due to their architecture, association with important events, or cultural impact.

External Costs

Costs of economic activities that are not reflected in the market price, affecting parties who did not choose to incur that cost.