Cameron Street Barber Shop pays $5 per month for water for the first 12,000 galons and $3.50 per thousand gallons above 12,000 gallons. Calculate gallons (Do not round interim calculations. Round your final answers to the nearest cent.) Usage Total Water Cost 8,000 gallons 16,000 gallons 18,000 gallons Calculate the total water cost when the barber shop uses 8,000 gallons, 16,000 gallons, and 18,000