Figure 18-1. The figure shows the relationship between the number of mechanics hired and the number of car repairs performed per day at a car-repair shop. 
-Refer to Figure 18-1. If the shop charges $120 per repair and pays each of its mechanics a wage of $400 per day, then what is the marginal profit of the third mechanic?
Definitions:
Strong Interest Inventory
A psychological assessment tool that measures an individual's interests in various occupational fields to aid in career planning.
Test Category
A classification used to organize tests based on their characteristics, purpose, or the subject matter they assess.
Find Your Interests Inventory
An assessment tool designed to help individuals identify their professional and personal interests to guide career and educational planning.
Test Category
A classification or grouping of tests based on specific criteria, such as domain assessed (e.g., cognitive, personality), purpose (e.g., diagnostic, educational), or methodology.
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