Use the figure below to answer the following questions. 
Figure 5.2.1
-Consider Figure 5.2.1.If the price is $4,what is the consumer surplus from the third unit of the good?
Definitions:
Plus or Minus
A tolerance indicating that a certain measurement may vary, either more or less, by a specified amount.
Symbol
An indicator, emblem, or phrase that conveys, represents, or is identified with a notion, item, or linkage.
Theoretical Size
The ideal, nominal size of a part or feature as defined in drawings, before tolerances are applied.
Limits
In engineering and manufacturing, limits refer to the maximum and minimum dimensions a part can have to be considered acceptable.
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