Solve the System of Equations by Using Substitution $$\left\{ \begin{array} { l } 3 x + y = 13 \\2 x + 9 y = - 8\end{array} \right.$$

question 106

Multiple Choice

Solve the system of equations by using substitution.
- $$\left\{ \begin{array} { l } 3 x + y = 13 \\2 x + 9 y = - 8\end{array} \right.$$

• A) x = 5, y = 2
• B) x = -5, y = -2
• C) x = -5, y = 2
• D) x = 5, y = -2

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Definitions:

Labor Efficiency Variance

measures the difference between the actual labor hours used and the standard labor hours expected for the production achieved, indicating labor efficiency.

Labor Efficiency Variance

A measure of the difference between the actual number of labor hours used and the standard number of labor hours expected to produce a certain level of output.

Materials Quantity Variance

The financial difference between the actual quantity of materials used in production and the standard expected quantity.

Favorable

A term used to describe outcomes or variances that are positive or beneficial to a business, such as lower costs or higher revenues than expected.