Table 12-21
The dollar amounts in the last three columns are the taxes owed under the three different tax systems. 
-Refer to Table 12-21. Which of the three tax systems is proportional?
Definitions:
University Setting
The environment or context within a university, including classrooms, laboratories, libraries, and other facilities, where academic activities and research are conducted.
Shock Levels
Pertains to the intensity of electrical shock or emotional impact used in experimental contexts to study behavior or stress responses.
Subjects' Behavior
The observable actions or reactions of individuals being studied in the context of research.
Conformity
The act of matching attitudes, beliefs, and behaviors to what is considered normal or acceptable in a social group or society.
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