Use the following to answer questions: 
-(Table: Total Cost and Output) Look at the table Total Cost and Output, which describes Sergei's total costs for his perfectly competitive all-natural ice cream firm. If the market price of a tub of ice cream is $67.50, how much is Sergei's total cost at the profit-maximizing output?
Definitions:
Full Faith and Credit Clause
A constitutional mandate requiring states to recognize and respect the public records, judicial proceedings, and legislative acts of other states.
Brady Handgun Violence Prevention Act
Federal legislation that requires background checks on individuals before a firearm purchase to prevent firearms sales to prohibited buyers.
Supreme Court
The highest federal court in the United States, with ultimate appellate jurisdiction over all federal and state court cases involving points of federal law.
Unitary System
A form of government in which a single central government holds all the power, with any regional authorities operating under its directive.
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