Typically, the sales volume declines with an increase of a product price. It has been observed, however, that for some luxury goods the sales volume may increase when the price increases. The following scatterplot illustrates this rather unusual relationship. 
Using the cubic regression equation, predict the sales if the luxury good is priced at $100.
Definitions:
Key Accounts
Refers to a company's most valuable and strategically important clients, who contribute significantly to its revenue and profitability.
Customer Service
The provision of assistance and advice to those who buy or use products or services.
Support Automation
The use of technology or software to provide customer support with minimal human intervention.
Live Chat
A digital customer service tool that allows for real-time conversation between a customer and service representative through a website or app interface.
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