Find the absolute value of the complex number 
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Definitions:
Inverse Demand
A representation of demand that shows how the price of a good or service can vary inversely with changes in the quantity demanded.
Typeset
The composition of text by arranging physical or digital type to make written language legible, readable, and appealing when displayed.
Marginal Cost
The financial outlay required to produce an additional unit of a product or service.
Demand Curve
A graphical representation of the relationship between the price of a good and the quantity of the good that consumers are willing to buy.
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