Solve the System of Equations by Using the Inverse of the Coefficient

question 4

Multiple Choice

Solve the system of equations by using the inverse of the coefficient matrix.
- $$\begin{array}{l}x-y+3 z=5 \\2 x+z=1 \\x+4 y+z=-7\end{array}$$

• A) \( (1,-2,0) \)
• B) \( (1,0,-2) \)
• C) \( (0,-2,1) \)
• D) No inverse, no solution for system

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Net Operating Income

A company's income after all operating expenses, excluding taxes and interest, have been deducted from total revenues.

Return On Investment (ROI)

A measure used to evaluate the efficiency or profitability of an investment, calculated by dividing net profit by the cost of the investment.

Net Operating Income

This refers to the profit realized from a business's operational activities, excluding taxes and interest.

Contribution Margin Ratio

A financial metric that measures the proportion of revenue that exceeds variable costs, indicating how much earnings can contribute towards fixed costs and profit.