If a space heater draws 10 amps from a 120-volt household circuit, and electricity costs 10¢ per kilowatt-hour, how much has it cost to run the space heater for 3 hours? Note that a watt-hour is equal to 1 watt of power used for one hour.

WorkKeys Applied Math exam covers critical thinking, mathematical reasoning, and problem-solving techniques for practical situations that happen every day in the workplace. This assessment has five levels of difficulty and may be administered by computer or pencil-and-paper exam.