A solar heating system costs about $6200 to install and $40 per month to operate. A traditional gas heating system costs about $900 and $130 per month to operate. 1.1. Create total cost functions for each heating system as a function of the number of months, including the installation and operation costs. 1.2. Sketch graphs of both functions on the same coordinate plane. Label and scale both axes appropriately. 1.3. How many months would you need to use a solar heating system in order for the total cost to become less than the total cost of the gas heating system? Indicate your answer in your graph.