what is the value of 12 √(8^4)?
768?
3 answers
correct
a homeowner recently spent $8600 to convert his heating system from oil to natural gas. his heating cost fell from $2360 a year using oil, to $960 a year using natural gas. based on changing from heating oil to natural gas, how many years will it take to recoup the cost of spending $8600 to convert to natural gas?
8600/(2360-960)