4. You find that your Phoenix utility is moving to "time of day" pricing which basically means it will cost more for electricity during the daytime. The new pricing will cost 25 cents from 10am to 10pm and 8 cents from 10pm to 10am. Assuming that 1,900 kWh/mo is consumed during the most expensive time frame 10am to 10pm and only 100 kWh/mo is used during the night hours, what is the cost to cool your home in an average month