please help me put this answer has multiple parts and im struggling.

Chase Street Barber Shop pays $30 per month for water for the first 10,000 gallons and $3.50 per thousand gallons above 10,000 gallons, Calculate the total water cost when the barber shop uses 6,000 gallons, 12,000 gallons, and 17,000 gallons. (Do not round interim calculations. Round your final answers to the nearest cent) Chase Street Barber Shop pays $30 per month for water for the first 10,000 gallons and $3.50 per thousand gallons above 10,000 gallons, Calculate the total water cost when the barber shop uses 6,000 gallons, 12,000 gallons, and 17,000 gallons. (Do not round interim calculations. Round your final answers to the nearest cent)