Jamilia was moving to a new city. she researched the rates charged by the local utility company for water. she found the listing of charges below. she expects that her family may use up to 1000 cubic feet of water each month.
• $12.70 monthly service fee.
• first 300 cubic feet of water used: $3.90 per 100 cubic feet, or fraction thereof.
• after the first 300 cubic feet: $5.20 per 100 cubic feet, or fraction thereof.

*sketch a graph of the cost of jamilla's possible water usage in one month. be sure to consider whay the cost would be for partial units such as 220 and 650.