Use the following to answer questions: 
-(Table: Value of the Marginal Product of Labor and Demand) In the figure Value of the Marginal Product of Labor and Demand, the total product of labor is shown for the hourly production of power cords. Assume that the market for power cords is perfectly competitive. If the price of a power cord is $2 and the market wage rate is $20 per hour, the profit-maximizing quantity of labor is _____ workers.
Definitions:
Utility Function
a mathematical representation in economics of a consumer's preference ranking over a set of goods or services.
Indifference Curve
A graphical representation showing combinations of goods or services among which a consumer is indifferent, signifying equal levels of utility.
Slope
The measure of the steepness or incline of a line, defined mathematically as the ratio of the vertical change to the horizontal change between two points on the line.
Corn Chips
A food product made from cornmeal, served as a snack or accompaniment, and can be relevant in discussions on consumer goods, manufacturing, and agricultural economics.
Q39: There are six households in a rural
Q55: The ability-to-pay principle is a good justification
Q66: An example of a social insurance program
Q87: No individual is willing to pay for
Q158: One objection to the marginal productivity theory
Q163: (Figure: Production Possibility Frontier) Look at the
Q175: Economic models that make unrealistic assumptions may
Q190: (Table: Employment and Output) In the table
Q291: (Figure: Demand and Supply of Shirts) Look
Q327: A pie chart is used to depict