1. Contact a natural gas or propane provider in your city and find out how much they charge for each gal or ft3. Contact your electric company and determine how much they are charging on average per kWh usage of electricity. If a hot-air gas or propane furnace has an efficiency of 94% and an electric heater has an efficiency of 100%, what is the more economical way to heat your home in your location: gas/propane or electric? Show your calculations and discuss the reasons for your decision