A typical car driven 20,000km a year emits to the atmosphere about 11kg of NOX (nitrogen oxides) per year, which cause smog in major population areas. Natural gas burned in the furnace emits about 4.3g of NOX per therm (1 therm =105,500kJ), and the electric power plants emit about 7.1g of NOper kWh of electricity produced. Consider a household that has two cars and consumes 9500 kWh of electricity and 1200 therms of natural gas per year. Determine the amount of NOx emission to the atmosphere per year for which this household is responsible. The amount of NOX emission to the atmosphere per year is xkg