Exhibit 11.13
The following questions use the data below.
The owner of Tim's Toys wants to predict monthly sales. He has collected data for 12 months. He needs your help in analyzing this data using moving averages. 
-Refer to Exhibit 11.13. What formulas go into cells B7:B9 of the following partial spreadsheet where data for periods 9-12 represent actual data?
Definitions:
Monopsonistic Labor Market
A labor market in which a single firm is the sole or dominant buyer of labor, giving it power to set wages below competitive levels.
Marginal Revenue Product
The additional revenue generated for each additional unit of input, such as labor or capital, used in the production process.
Marginal Resource Cost
The increase in total cost that results from utilizing one additional unit of a resource in production.
Marginal Revenue Product
The additional revenue generated from employing one more unit of a factor, such as labor or capital.
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