Use the following to answer questions:
Figure: Game-Day Shirts 
-(Figure: Game-Day Shirts) Rick is one of 10 vendors who sell game-day T-shirts at football games in a perfectly competitive market. His costs are identical to the costs of the other 9 vendors. If the price of a shirt is $9, the short-run industry supply will be _____ shirts.
Definitions:
Locate a Case
The process of finding information on a specific legal case within court records or legal databases.
West's Key-Number System
A comprehensive system used for organizing American case law by topic, allowing lawyers and researchers to find relevant cases easily.
Case Law
The law as established by the outcome of former cases, serving as an important source of legal precedent for future disputes.
Statute
A written law passed by a legislative body at the federal or state level, formally codified and enacted.
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