Table 13-4
the Following Table Shows the Production Possibilities for Charles

question 50

Multiple Choice

Table 13-4
The following table shows the production possibilities for Charles' math tutoring company.
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$$\begin{array} { | c | c | } \hline \begin{array} { c } \text { Labor } \\\text { (Number of tutors) }\end{array} & \begin{array} { c } \text { Output } \\\text { (Number of students } \\\text { tutored per week) }\end{array} \\\hline 0 & 0 \\\hline 1 & 20 \\\hline 2 & 45 \\\hline 3 & 60 \\\hline 4 & 70 \\\hline\end{array}$$ ​
-Refer to Table 13-4. Suppose that Charles's math tutoring company has a fixed cost of $50 per month for his cell phone. Each worker costs Charles $60 per day. As output increases from 45 to 70 students, Charles's total cost curve

• A)increases but gets flatter.
• B)increases and gets steeper.
• C)decreases and gets flatter.
• D)decreases but gets steeper.

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Definitions:

Cork Cells

Specialized cells in the bark of a plant that are dead at maturity and serve to protect and waterproof the plant.

Collenchyma

Living cells with moderately but unevenly thickened primary cell walls; collenchyma cells help support the herbaceous plant body.

Xylem

Xylem is the type of plant tissue responsible for the transport of water and nutrients from the roots to the leaves and stems, playing a critical role in plant vascular systems.

Periderm

The outer bark of woody stems and roots; composed of cork cells, cork cambium, and cork parenchyma, along with traces of primary tissues.