Solve Using Cramer's Rule $$\begin{array} { r } 3 x - 7 y - z = - 40 \\x - 4 y - 5 z = - 36 \\- 9 x + y + z = - 44\end{array}$$

question 22

Multiple Choice

Solve using Cramer's rule.
- $$\begin{array} { r } 3 x - 7 y - z = - 40 \\x - 4 y - 5 z = - 36 \\- 9 x + y + z = - 44\end{array}$$

• A) \(( 6 , - 8 , - 2 )\)
• B) \(( 7,6,2 )\)
• C) \(( 6,8,2 )\)
• D) \(( 8,2,8 )\)

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Definitions:

MC

The additional cost of producing one more unit of a product or service.

TVC

Total Variable Cost, which refers to the total of all costs that vary with output level in the short term.

Formula

A mathematical relationship or rule expressed in symbols, often used to calculate and predict outcomes.

Marginal Cost

The expense associated with the manufacturing of an extra unit of a product or service.