A.) A 20-W compact fluorescent lamp replaces a 100-W incandescent bulb. How much energy does it save over its 10,000 hour lifetime? B.) At $0.10 per kilowatt-hour, how much money does this save? My attempt at answering: Difference is wattage is 80-W, multiplied by 10,000 hours is 800,000 (not sure of the label here, is it Kilowatt hours?) saved. Is part B just multiplying the 800,000 (UNIT) saved times (0.10) to get $80,000 saved? Thank you for your help!