Use Cramer's Rule, If Possible, to Solve the System of Linear

question 88

Multiple Choice

Use Cramer's Rule, if possible, to solve the system of linear equations.
- $$\left\{ \begin{array} { l } - 3 x - 6 y - 3 z = - 60 \\- 4 x + 2 y + 3 z = 18 \\- 6 x - 3 y + 7 z = - 5\end{array} \right.$$

• A) \(( 3,5,4 )\)
• B) \(( 7,4,7 )\)
• C) \(( 2,7,4 )\)
• D) \(( 2 , - 7 , - 4 )\)

---

Definitions:

Fixed Cost

A cost that does not change with the level of output or production, such as rent or salaries.

Short Run

A period in economics during which at least one input, such as plant size, is fixed and cannot be changed.

Physical Capital

Tangible assets such as buildings, machinery, and equipment used in the production of goods and services.

Variable Cost

Costs that vary directly with the level of production, such as raw materials, labor, and energy used in the manufacturing process.