Solve Using Any Method $$\left\{ \begin{aligned}7 x + 6 y & = 15 \\y & = x - 7\end{aligned} \right.$$

question 52

Multiple Choice

Solve using any method.
$$\left\{ \begin{aligned}7 x + 6 y & = 15 \\y & = x - 7\end{aligned} \right.$$

• A) \(( 7,0 )\)
• B) \(\left( - 6 , \frac { 51 } { 7 } \right)\)
• C) \(\left( - \frac { 27 } { 13 } , - \frac { 64 } { 13 } \right)\)
• D) \(\left( \frac { 57 } { 13 } , - \frac { 34 } { 13 } \right)\)
• E) inconsistent

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Definitions:

Marginal Social Cost

The complete expense incurred by society for the production of one more unit of a product or service.

Public Park

A piece of public land in urban areas designated for recreational use by the general public, often maintained by local government.

Socially Optimum

A state where resources are allocated in the most efficient way from a societal perspective, maximizing social welfare.

Positive Externality

A benefit that affects a party who did not choose to incur that benefit, often discussed in the context of public goods and services.