The figure below shows the relationship of the quantity demanded for iTune music downloads per day to the price of each iTune music download. 
(A) If the price of iTune music dommlaats increases fram 12 per dommaad to 14 per domidaad by how much will the quantity demanded for iTune music dowrloads change?
(B) Eolnan how yaur anser in part (A) relies on the ceteris paribm assumption.
Definitions:
This Firm
A term often used in economic models or discussions to represent a generic company or business under analysis.
Economic Profit
The difference between a firm's total revenues and its total costs, including both explicit and implicit costs.
Opportunity Costs
The penalty of not opting for the next superior alternative while making a decision.
Total Revenues
The total amount of income generated by the sale of goods or services related to the company's primary operations.
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