Sketch the graph and find the area of the region completely enclosed by the graphs of the given functions f and G. 
and 
Definitions:
Marginal Cost
The change in total cost that arises when the quantity produced increases by one unit.
Industry Output
The total quantity of goods or services produced by all firms within a particular industry.
Zero Marginal Cost
The scenario in which producing one more unit of a good or service does not increase the total cost of production, typically seen in digital goods or highly automated processes.
Marginal Cost
The extra expense linked to generating one more unit of a product or service.
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