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 $4 and the wage rate is $160 per hour, the profit-maximizing quantity of labor is _____ worker(s) .
Definitions:
Proactive Interference
The phenomenon where older memories interfere with the recall of newer memories.
Retroactive Interference
A phenomenon where learning new information negatively impacts the recall of previously learned information.
Nonsense Syllables
Meaningless sets of two consonants with a vowel sandwiched in between, used in memory and learning experiments.
Cued Recall
A memory retrieval process in which a person successfully recalls information with the help of prompts or cues.
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