Solve the System by the Best Method $$\left\{ \begin{array} { l } - 2 x - 8 y = - 38 \\6 x - 9 y = - 18\end{array} \right.$$

question 57

Multiple Choice

Solve the system by the best method. Use set notation to express the solution set.
- $$\left\{ \begin{array} { l } - 2 x - 8 y = - 38 \\6 x - 9 y = - 18\end{array} \right.$$

• A) \(\{ ( - 3,5 ) \}\)
• B) \(\{ ( 3,4 ) \}\)
• C) \(\{ ( 2,5 ) \}\)
• D) no solution; \(\varnothing\)

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Definitions:

Positive Cost Variance

Occurs when the actual cost of a project is less than the budgeted amount, indicating under-spending or efficiency.

Under Budget

A situation in which the actual spending is less than what was originally planned or allocated for a project or activity.

Management Reserves

Funds set aside by management for unforeseen changes in the scope or cost of a project.

Contingency Reserves

Allocated resources, time, or funds kept in reserve to address potential unforeseen obstacles or costs in a project.