Use the formula Kilowatt-hour (kWh) = Watts x
hours used per day divided by the wattage. To estimate the maximum kilowatt-hour that each appliance uses per day, per month, and per year. Write your answers in scientific notation with a single-digit multipler. Assume 30 days a month and 365 days per year.
2. Which appliance uses the least amount of energy per day?
3. Which appliance uses the most amount of energy per year?
Televison - Wattage: 300 Hours per day: 8
Clothes dryer - Wattage: 2,790 Hours per day: 4
Refrigerator - Wattage: 225 Hours per day: 24