I need assistants on how to calculate the following problem. George street barber shop pays $45 per month for water for the first 8,000 gallons and 2.50 per thousand gallons. The problem is calculate the total water cost whenthe barber shop uses 6,000 gallon, 9,000 gallons and 14,000 gallons. What i would like is the steps to figure out other questions like this one.