Solve the Problem $A = \left[ \begin{array} { r } 3 \\ - 5 \\ - 4 \end{array} \right]$

question 104

Multiple Choice

Solve the problem.
-Let $A = \left[ \begin{array} { r } 3 \\ - 5 \\ - 4 \end{array} \right]$ and $B = \left[ \begin{array} { r } - 5 \\ 6 \\ 5 \end{array} \right]$ . Find $A + B$ .

• A)
• \(\left[\begin{array}{r}
• -2 \\
• 1 \\
• 1
• \end{array}\right]\)
• B)
• \(\left[ \begin{array} { l l l } - 2 & 1 & 1 \end{array} \right]\)
• C)
• \(\left[\begin{array}{rr}
• 3 & -5 \\
• -5 & 6 \\
• -4 & 5
• \end{array}\right]\)
• D)
• \(\left[\begin{array}{l}
• 2 \\
• 1 \\
• 2
• \end{array}\right]\)

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Definitions:

Marginal Revenue

The boost in revenue achieved by selling an additional unit of a good or service.

Price Taker

A buyer or seller that is unable to influence the market price of a product or service.

Marginal Revenue Curve

A graphical representation showing how the revenue from selling one more unit of a good or service changes as production volume changes.

Price-searcher Firm

A company that has the ability to set the price for its products because it does not face perfect competition.