Data is collected from 20 sales people in order to verify that the more contacts made with potential clients, the greater the sales volume. The Excel printout is shown below. 
This model predicts that with 25 sales contacts, sales will be:
Definitions:
Tax Revenue
The income that is gained by governments through taxation of individuals and businesses.
Tax Policy
The set of laws and regulations that govern how taxes are collected, managed, and utilized by the government.
Production Possibilities Frontier
The production possibilities frontier (PPF) is a curve depicting all maximum output possibilities for two goods, given a set of inputs.
Societal Welfare
The overall well-being and quality of life of the people in a society, often considered in terms of economic, social, and environmental indicators.
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