Use Matrices to Solve the System of Equations $\left\{ \begin{array} { r } 6 x + y - z = 21 \\x + 2 y + z = 15 \\5 y - z = 23\end{array} \right.$

question 35

Multiple Choice

Use matrices to solve the system of equations. $\left\{ \begin{array} { r } 6 x + y - z = 21 \\x + 2 y + z = 15 \\5 y - z = 23\end{array} \right.$

• A) \(( 4,6,2 )\)
• B) \(( 3,5,2 )\)
• C) \(( - 3 , - 5 , - 2 )\)
• D) no solution
• E) infinitely many solutions

Understand the response mechanisms to surplus and shortage in different economic systems.

Identify and explain the main components and benefits of the market system, including the concept of the invisible hand.

Comprehend the coordination and incentive problems in centrally planned economies and how they impact economic efficiency.

Identify the issues related to risk management in both command and market economies.

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