Decide What Values of the Variable Cannot Possibly Be Solutions $$\frac { 7 } { x - 4 } = 1 + \frac { 9 } { x + 4 }$$

question 312

Multiple Choice

Decide what values of the variable cannot possibly be solutions for the equation.
- $$\frac { 7 } { x - 4 } = 1 + \frac { 9 } { x + 4 }$$

• A) \(\varnothing\)
• B) \(\{ - 9,10 \}\)
• C) \(\{ 8 , - 10 \}\)
• D) \(\{ - 8,10 \}\)

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Definitions:

Weighted-Average Method

A cost accounting method that averages the costs of goods available for sale or production, weighting by the quantities at each cost.

Materials Cost

The total expense incurred by a company for raw materials and supplies needed to manufacture products.

Weighted-Average Method

A method for valuing inventory that figures out the cost of goods sold and the end inventory value by averaging the cost of all items available for sale over the period.

Labor and Overhead

The combination of direct labor costs and overhead costs incurred in the production process.