Estimate the annual cost savings incurred by replacing an existing clothes washer (having 2.65 ft³ tub volume) with a water/energy-efficient appliance that has an EF of 2.50 ft³/kWh and uses 42 gallons per load. The washer is operated based on 400 cycles (loads) per year. The water is heated using an electric heater. Assume that the electricity cost is $0.07/kWh and that water/sewer cost is $5/1,000 gallons.