Find the equation of the quadratic function that is the best fit for the given data. 
Definitions:
Merchandise Pricing
The process of determining the price at which goods will be sold to consumers.
Sales Agents
Sales agents are individuals or companies authorized to sell products or services on behalf of another company, often earning a commission for their sales.
Threshold
The minimum level of stimulus required to activate a process or produce a response.
Decision Making
The process of making choices by identifying a decision, gathering information, and assessing alternative resolutions.
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