Decide Which of the Given Ordered Pairs Is a Solution $$\left( \begin{array} { c } 2 x + 5 y = - 14 \\4 x - y = 16\end{array} \right)$$

question 305

Multiple Choice

Decide which of the given ordered pairs is a solution of the given system of equations. $$\left( \begin{array} { c } 2 x + 5 y = - 14 \\4 x - y = 16\end{array} \right)$$

• A) ( -3, -4 )
• B) ( -3, 4 )
• C) ( 3, -4 )
• D) ( 5, -8 )
• E) infinitely many

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Definitions:

Marginal Revenue

The revenue increase resulting from the sale of an extra unit of a good or service.

Monopolistically Competitive

A market structure in which several or many sellers each produce similar, but slightly differentiated products; competition is based on product differentiation, prices, and marketing.

Monopolistically Competitive

A market structure characterized by many firms selling products that are substitutes but not perfect substitutes, leading to some degree of market power for each firm.

Fixed Costs

Costs that do not change with the level of output produced, such as rent, salaries, and loan repayments.