StudySync - Read -.. T Freety CS ... Emily Delgadillo - Ch 6 sec 8/9 Energy Consumption w/s + 100% 3. A 1200-W hair dryer is used by several members of a family for a total of 30 min per day during a 30- day month. How much electrical energy is consumed by the hair dryer during the month? Give your answer in: power= 1220 W time= 30 x 30= 900= 900/60=15h Kilowatt.hours: 1220x 15= 18300 18300/1000=18.3 kwh 4. If the power company charges $0.15 per KW.h for electrical energy. what is the cost of using the hair dryer in Question 3 during the month? What is the cost for a year? mn0.15 x 18.3= 2.745 5. Not enough heat from the furnace reaches one bedroom in a home. The homeowner uses a portable 1350-W electric heater 24 h per day to keep the bedroom warm during four cold winter months. At 50.12 per kilowatt-hour, how much does it cost to operate the heater for the four months? (Assume two 30-day and two 31-day months.) acer