(Figure: Profit Maximization) In the figure, marginal revenue for the fifth unit is:
$\begin{array}{|c|c|c|c|c|}
\hline \text { Quantity } & \text { Price } & \begin{array}{c}
\text { Total } \
\text { Revenue }
\end{array} & \text { Total Cost } & \begin{array}{c}
\text { Marginal } \
\text { Cost }
\end{array} \
\hline 1 & \$ 9 & \$ 9 & \$ 12 & \$ 4 \
\hline 2 & 9 & 18 & 15 & 3 \
\hline 3 & 9 & 27 & 21 & 6 \
\hline 4 & 9 & 36 & 30 & 9 \
\hline 5 & 9 & 45 & 41 & 11 \
\hline
\end{array}$

Question

(Figure: Profit Maximization) In the figure, marginal revenue for the fifth unit is:
 $\begin{array}{|c|c|c|c|c|}
\hline \text { Quantity } & \text { Price } & \begin{array}{c}
\text { Total } \
\text { Revenue }
\end{array} & \text { Total Cost } & \begin{array}{c}
\text { Marginal } \
\text { Cost }
\end{array} \
\hline 1 & \$ 9 & \$ 9 & \$ 12 & \$ 4 \
\hline 2 & 9 & 18 & 15 & 3 \
\hline 3 & 9 & 27 & 21 & 6 \
\hline 4 & 9 & 36 & 30 & 9 \
\hline 5 & 9 & 45 & 41 & 11 \
\hline
\end{array}$

Quizplus · Accepted Answer

Marginal revenue for the fifth unit is the change in total revenue from selling the fourth unit to the fifth unit, which is $45 - $36 = $9.

(Figure: Profit Maximization) in the Figure, Marginal Revenue for the Fifth