Solve the System by Substitution, If Possible $$\left\{ \begin{array} { c } x + 2 y = 7 \\3 x - 2 y = - 14\end{array} \right.$$

question 42

Multiple Choice

Solve the system by substitution, if possible. $$\left\{ \begin{array} { c } x + 2 y = 7 \\3 x - 2 y = - 14\end{array} \right.$$

• A) \(( - 3,5 )\)
• B) \(( 5,3 )\)
• C) \(( 3,5 )\)
• D)infinitely many solutions, dependent equations
• E)no solution, inconsistent system

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Definitions:

Variable Costs

Costs that change in proportion to the level of activity or production volume, such as materials and direct labor.

Average Total Cost

The sum of all production costs (both fixed and variable) divided by the total amount of goods produced.

Average Variable Cost

The total variable costs (costs that change with production levels) divided by the quantity of output produced, representing the per-unit variable cost.

Total Cost

The sum of all costs incurred by a firm in producing a certain level of output, including both fixed and variable costs.