Mathematics, 20.10.2020 22:01 Deascry
Parents sometimes yell at their children for leaving the light on in their bedroom when they aren't in the room. If the child's room is lit with two 10 watt bulbs for one extra hour a day for everyday of the year (365), and the cost of energy is $0.068 per kilowatt*hour (kWh), how much money is wasted on lighting that isn't being used, to the nearest cent.
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Parents sometimes yell at their children for leaving the light on in their bedroom when they aren't...
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