Use the following to answer questions: 
-(Table: Total Cost for a Perfectly Competitive Firm) Look at the table Total Cost for a Perfectly Competitive Firm. If the market price is $4.50, the profit-maximizing output is _____ units.
Definitions:
Product Mix
The variety of products that a company produces or sells, considering the diversity in type, size, and quality.
Prime Cost
The sum of direct materials and direct labor costs associated with the production of goods.
Manufacturing Overhead
Indirect costs associated with manufacturing, such as utilities, maintenance, and factory equipment depreciation, not directly tied to specific units of product.
Fixed Portion
The segment of total costs that does not change with changes in the activity level.
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