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If electricity costs 6.00¢/kWh (kilowatt-hour) ,how much would it cost you to run a 120 W stereo system 4.0 hours per day for 4.0 weeks?
Labor-Saving Devices
Labor-saving devices are tools, machines, or equipment designed to reduce the amount of manual labor and time required to complete various tasks or chores.
Leisure Time
The period of time during which an individual is not working or fulfilling obligations, allowing for rest, recreation, or personal activities.
Urban Crime Rate
The number of recorded criminal acts per unit of population or a specific time period within an urban area.
Urban Political Machines
Political organizations in cities, particularly prominent in the late 19th and early 20th centuries, that controlled electoral outcomes through patronage and corruption.
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