Write the System of Equations Associated with the Augmented Matrix $$\left[ \begin{array} { r r r | r } 3 & 6 & 2 & - 2 \\6 & 0 & 7 & 4 \\2 & 7 & 0 & 2\end{array} \right]$$

question 48

Multiple Choice

Write the system of equations associated with the augmented matrix. Do not solve.
- $$\left[ \begin{array} { r r r | r } 3 & 6 & 2 & - 2 \\6 & 0 & 7 & 4 \\2 & 7 & 0 & 2\end{array} \right]$$

• A) \(\left\{ \begin{array} { l } 3 x - 6 y + 2 z = - 2 \\ 6 x + 7 z = - 4 \\ 2 x + 7 y = - 2 \end{array} \right.\)
• B) \(\left\{ \begin{array} { l } 3 x + 6 y + 2 z = - 2 \\ 6 x + 7 z = 4 \\ 2 x + 7 y = 2 \end{array} \right.\)
• C) \(\left\{ \begin{array} { l } 3 x + 6 y + 2 z = - 2 \\ 6 x + 7 z = 4 \\ 2 x + 7 z = 2 \end{array} \right.\)

Understand the effects of savings and investment on interest rates and the economy according to Classical theory.

Explain the role of consumption, exports, and imports in achieving macroeconomic equilibrium.

Understand the determinants of employment and output according to Keynes.

Illustrate the effects of changes in aggregate demand on the economy.

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