A PS4 uses 8.8 watts when on stand-by mode.
a) How much electricity would be used if you have your PS4 on stand-by 21 hours a day for 1 week?
Express your answer rounded to the nearest hundredth of a kilowatt-hour.
1.29 kW-hr
b) How much carbon dioxide is emitted into the atmosphere to produce this electricity?
Express your answer rounded to the nearest tenth of a pound of carbon dioxide.
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