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a 120 volt,13 watts fluorescent light bulb is operated from 6pm until 10pm every day the cost per kilo watt hour is $0.07. what does it cost to operate this light bulb for 30 days​
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a 120 volt,13 watts fluorescent light bulb is operated from 6pm until 10pm every day the cost per kilo watt hour is $0.07. what does it cost to operate this light bulb for 30 days​

User Sergey Smelov
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1 Answer

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4*0.07=energy use per day(x)
(x)*30=energy use in thirty days (y)

Therefore
X=$0.28
Y=$8.4

User MichaelChirico
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