Solve Problems Using Systems of Linear Equations
-You Invested $\$ 13,200$

question 35

Multiple Choice

Solve Problems Using Systems of Linear Equations
-You invested $\$ 13,200$ and started a business selling vases. Supplies cost $\$ 20$ per vase and you are selling each vase for $\$ 31$ . Let $x$ represent the number of vases produced and sold and write the cost function, $C$ , and revenue function, $R$ .

• A) \(C ( x ) = 20 x + 13,200\)
• \(\mathrm { R } ( \mathrm { x } ) = 31 \mathrm { x }\)
• B) \(C ( x ) = 20 x + 31\)
• \(\mathrm { R } ( \mathrm { x } ) = 13,200 \mathrm { x }\)
• C) \(C ( x ) = 20 x + 13,200\)
• \(R ( x ) = 31\)
• D) \(C ( x ) = 20 x + 13,200 x\)
• \(R ( x ) = 31 x\)

---

Definitions:

Variance

A measure of the dispersion or spread of a set of data points around their mean value.

Direct Materials Quantity Variance

The difference between the actual quantity of direct materials used in production and the standard quantity expected to be used.

Standard Labor Hours

The predetermined amount of time expected to be required to complete a task or produce a unit of goods under normal conditions.

Direct Materials Price Variance

The difference between the actual cost of materials used in production and the expected (standard) cost, indicating how effectively a company controls its raw material expenses.