Solve the System by the Substitution Method or the Addition $\left\{ \begin{array} { l } 3 ( 2 x + y ) = 4 x + 21 \\x - 2 y = 0\end{array} \right.$

question 102

Multiple Choice

Solve the system by the substitution method or the addition method.
- $\left\{ \begin{array} { l } 3 ( 2 x + y ) = 4 x + 21 \\x - 2 y = 0\end{array} \right.$

• A) \(( 6,3 )\)
• B) \(( - 3,6 )\)
• C) \(( 4,2 )\)
• D) no solution

Understand the relationship between output level and variable costs.

Comprehend how total, marginal, and average products relate to production efficiency.

Distinguish between short run and long run in production and costs.

Differentiate between economic and accounting profits.

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Definitions:

Unused Capacity

The portion of a company’s resources or capabilities that are not currently utilized or producing income.

Capacity

The maximum output that a company can produce under normal conditions over a certain period.

Predetermined Overhead Rate

A rate calculated at the beginning of a period, used to allocate overhead costs to products based on a particular activity base.

Machine-Hours

A metric assessing the amount of produced goods or operations based on machines' operation duration.