An Energy-Efficient Light Bulb Uses 15 W of Power for an Equivalent

question 23

Multiple Choice

An energy-efficient light bulb uses 15 W of power for an equivalent light output of a 60 W incandescent lightbulb. How much money do you save each month by using the energy-efficient lightbulb instead of the incandescent lightbulb for 6 hours a day? Assume that 1 kW·hr costs 14 cents and there are 30 days in one month.

• A) $0.39
• B) $0.76
• C) $1.51
• D) $0.57
• E) $1.13

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Definitions:

Mobile Connectivity

The ability of devices to connect to the internet or to each other wirelessly, enabling mobile communication and access to information.

Decision Making

The act or process of making choices or selecting options, often involving analysis and evaluation.

Problem Solving

The process of identifying a problem, discovering the reasons behind the problem, and finding practical solutions to overcome the problem.

Gamification Devices

Tools or technologies that apply game design elements in non-game contexts to engage and motivate people.