Solve the System for X and Y Using Cramer's Rule $$\begin{array} { l } a ^ { 2 } x + b ^ { 2 } y = b ^ { 2 } \\a x + b y = a\end{array}$$

question 150

Multiple Choice

Solve the system for x and y using Cramer's rule. Assume a and b are nonzero constants.
- $$\begin{array} { l } a ^ { 2 } x + b ^ { 2 } y = b ^ { 2 } \\a x + b y = a\end{array}$$

• A) \(\left\{ \left( \frac { b } { a } , \frac { a + b } { b } \right) \right\}\)
• B) \(\left\{ \left\{ \frac { a } { b } , \frac { a - b } { b } \right) \right\}\)
• C) \(\left\{ \left( \frac { \mathrm { b } } { \mathrm { a } } , \frac { \mathrm { a } - \mathrm { b } } { \mathrm { b } } \right) \right\}\)
• D) \(\left\{ \left\{ - \frac { b } { a } , \frac { a + b } { b } \right) \right\}\)

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Definitions:

LIFO

Last-In, First-Out, an inventory valuation method where the most recently produced items are recorded as sold first.

Cost Flow Assumption

Accounting methods that companies use to assign costs to inventory and cost of goods sold, such as FIFO, LIFO, and weighted average cost.

Gross Profit

The financial gain obtained after subtracting the cost of goods sold from total sales revenue.

Average Cost Methods

The average cost method is an inventory costing method where all costs of inventory are averaged out and applied to the cost of goods sold and ending inventory.