Robert Street Barber Shop pays $20 per month for water for the first 9,000 gallons and $2.75 per thousand gallons above 9,000 gallons. Calculate the total water cost when the barber shop uses 5,000 gallons, 10,000 gallons, and 15,000 gallons (Do not round interim calculations. Round your final answers to the nearest cent.) Total Water Cost Usage 5,000 gallons 10,000 gallons 15,000 gallons