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

question 107

Multiple Choice

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

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

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Definitions:

Inflationary Price Increase

A rise in prices across the board that is often attributed to an increase in the money supply or demand outpacing supply.

Absorption Costing

An accounting method that includes all manufacturing costs (direct materials, direct labor, and both variable and fixed overhead) in the cost of a product.

Variable Costs

Additional costs incurred when unit production increases. Variable costs per unit usually are assumed not to vary with volume.

Inventory Costing Method

A system used to value inventory, often involving methods such as First-In, First-Out (FIFO) or Last-In, First-Out (LIFO).