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Suppose that the demand curves for goods A, B, and C have the following functional forms:, where Q denotes quantity demanded and P denotes price:
QA = 120 - 3.5 PA - 6PB QB = 100 - 2PB + 3PC QC = 1500 - 0.5PC.
Based on these demand curves, which of the following pairs of goods are known to be complements?
Depth of Product Line
The range of product items offered within a particular category, reflecting the variety and specialization of products.
Greeting Cards
Printed or digital cards sent to convey personal messages for various occasions, such as birthdays or holidays.
Full Service
Offering or providing a complete range of services or products, accommodating all aspects of a customer's needs.
Automated Service
Automated service involves the use of technology to perform tasks and deliver services to customers with minimal human intervention.
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