Identify the Elementary Row Operation Being Performed to Obtain the New

question 92

Multiple Choice

Identify the elementary row operation being performed to obtain the new row-equivalent matrix. Original $\mathrm { Mat } \mathrm { rix }~~~~~~~~~~$ New Row-Equivalent Matrix
$\left[ \begin{array} { c c c } 6 & - 7 & - 6 \\7 & 6 & - 1\end{array} \right]~~~~~$$\left[ \begin{array} { c c c } 20 & 5 & - 8 \\7 & 6 & - 1\end{array} \right]$

• A)Add 2 times R1 to R2.
• B)Add -2 times R2 to R1.
• C)Add -2 times R1 to R2.
• D)Add 2 times R1 to R1.
• E)Add 2 times R2 to R1.

---

Definitions:

Marginal Revenue Curve

A graphical representation showing how additional sale of one more unit of a good or service affects the total revenue.

New Firms

Businesses that have been recently established, entering the market to offer goods or services.

Existing Firms

Businesses that are currently operational and have been established in the market for a period of time.

Profit

The financial gain obtained when the revenue from business activities exceeds the expenses, costs, and taxes involved in sustaining the activity.