In this problem we have the price of many utilities, and the quantity consumed of each one. We must compute the total bill of a month.
The cost of each service is:
• Electricity: $0.15/kWh * 2,000 kWh = $300,
,
• Gas: $1/(100 ft³) * 4,300 ft³ = $43,
,
• Water: $0.03/(10 gal) * 8,000 gal = $24,
,
• Phone: $30/line * $10 lines = $300,
,
• Phone: $0.10/int min * 500 int min = $50,
,
• Internet: $200.
The total bill of the services, is the sum of each individual cost:
• Total bill = $300 + $4,300 + $24 + $300 + $50 + $200 = $917
Answer: A. $917.00