Find the Indicated Sum or Difference, If It Is Defined

question 122

Multiple Choice

Find the indicated sum or difference, if it is defined.
- $$\left[ \begin{array} { r r } - 1 & 5 \\0 & 4 \\8 & - 4\end{array} \right] - \left[ \begin{array} { l l } 2 & 1 \\7 & 4 \\4 & 2\end{array} \right]$$

• A) \(\left[ \begin{array} { r r } - 3 & 4 \\ - 7 & 0 \\ 4 & - 6 \end{array} \right]\)
• B) \(\left[ \begin{array} { r r } 3 & - 4 \\ 7 & 0 \\ - 4 & 6 \end{array} \right]\)
• C) not defined
• D) \(\left[ \begin{array} { r r } 1 & 6 \\ 7 & 8 \\ 12 & - 2 \end{array} \right]\)

---

Definitions:

Level of Risk

The level of risk and possible monetary loss associated with making an investment choice.

Weighted Average Cost

A measure that calculates the average cost of goods available for sale, considering the weight of each unit's cost.

Cost of Equity

The rate of return that a company is expected to pay out to its shareholders for their investment in the company, factoring in the risk of the investment.

Cost of Preferred

This refers to the required return on investment for preferred stock, representing the cost to a company for issuing such stock.