The following figure shows the marginal cost curve,average total cost curve,average variable cost curve,and marginal revenue curve for a firm for different levels of output.
Figure 9-3 
-Refer to Figure 9-3.At the output level OC,average fixed cost is equal to _____.
Definitions:
Sub-Saharan African Countries
Nations located in the region of Africa that lies south of the Sahara Desert, often characterizing a geographic and socio-economic grouping.
Incidence
The allocation of the burden of a tax between buyers and sellers, or the effect of a policy or economic event on particular groups.
Industrial Market Countries
Nations with highly developed industries where the majority of economic activities are focused on manufacturing and services.
High-Income Economies
Countries or regions characterized by a high gross domestic product (GDP) per capita, indicating a higher standard of living and economic development.
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