Solve the Equation for X $$\left| \begin{array} { l l } x & 1 \\2 & x\end{array} \right| = - 1$$

question 138

Multiple Choice

Solve the equation for x.
- $$\left| \begin{array} { l l } x & 1 \\2 & x\end{array} \right| = - 1$$

• A) \(\{ 1 \}\)
• B) \(\{ - 1,1 \}\)
• C) \(\{ - 1 \}\)
• D) \(\varnothing\)

---

Definitions:

Disposable Income

Economic resources that households can utilize for spending and saving actions after income tax deductions.

Savings

The portion of income that is not spent on current expenditures and instead set aside for future use.

Disposable Income

The disposable capital for households' spending and saving endeavors after income taxes.

Consumption

The process of purchasing goods and services to fulfill the needs and wants of individuals.