part 3

Average daily electricity usage: 18 kWh

18 kWh/day X (0.524 lb CO2 / kWh) =

9.432 lb CO2 /day

Average daily natural gas usage: 1.5 therms

1.5 therms/day X (13.446 lb CO2 / therm) =

20.169 lb CO2 /day

Average daily CO2 emissions: 9.432 + 20.169 lb CO2 =

29.601 lb CO2

*