Write the Augmented Matrix for the System $$\left\{ \begin{array} { c } - 2 x + 6 y = 8 \\5 y = 20\end{array} \right.$$

question 82

Multiple Choice

Write the augmented matrix for the system.
- $$\left\{ \begin{array} { c } - 2 x + 6 y = 8 \\5 y = 20\end{array} \right.$$

• A) \(\left[ \begin{array} { r r | r } 8 & 6 & - 2 \\ 20 & 0 & 5 \end{array} \right]\)
• B) \(\left[ \begin{array} { r r | r } 5 & 0 & 20 \\ - 2 & 6 & 6 \end{array} \right]\)
• C) \(\left[ \begin{array} { r r | r } - 2 & 6 & 8 \\ 0 & 5 & 20 \end{array} \right]\)
• D) \(\left[ \begin{array} { r r | r } - 2 & 6 & 8 \\ 5 & 20 & 0 \end{array} \right]\)

Interpret financial data to determine gross margin, net income, and contribution margin.

Understand and apply different methods (scattergraph, high-low, least-squares regression) for estimating costs.

Differentiate among variable, fixed, step-variable, and mixed costs.

Understand how modern technology impacts cost structures in industries.

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