Exhibit 16-1.The following Excel scatterplot with the fitted quadratic regression equation illustrates the observed relationship between productivity and the number of hired workers. 
Refer to Exhibit 16.1.Assuming that the number of hired workers must be integer,how many workers should be hired in order to achieve the highest productivity?
Definitions:
Consumer Surplus
The gap between the total amount consumers are prepared and able to spend for a product or service versus what they genuinely spend.
Maximum Price
The highest price that can legally be charged for a good or service, often set by government regulations to protect consumers from excessively high prices.
Market Failure
A situation in which the allocation of goods and services is not efficient, often leading to a net social welfare loss.
Consumer Surplus
The discrepancy in the overall amount consumers are inclined and able to expend on a product or service versus what they actually fork out.
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