The demand curve and supply curve for a good are given by QD = 100 - 5P and QS = 1.25P - 2.5. Suppose the production of this good creates a negative externality, where the external marginal cost is constant at $2. 
Definitions:
Salespeople
Professionals who sell products or services with the aim of meeting customer needs and achieving sales targets.
Products
Items or services offered for sale, including physical goods, digital items, and services.
POP
Point of Purchase, referring to the location and timing where a retail transaction is completed.
Sales Promotions
Marketing activities that aim to boost sales and attract customers by offering limited-time incentives.
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