A 100-W Driveway Light Bulb Is on 10 Hours Per

question 54

Multiple Choice

A 100-W driveway light bulb is on 10 hours per day. Assuming the power company charges 10 cents for each kilowatt-hour of electricity used, estimate the annual cost to operate the bulb.

• A)$3.65
• B)$7.30
• C)$21.40
• D)$36.50
• E)$73.00