A bidding process is used to find the best option for our companies to buy a new program for calculation. Three companies applied. Each company has a different pricing structure: Company 1 provides a site license that costs $36000 and can be used by anyone at our company; Company 2 charges $3000 per user; Company 3 charges a fixed amount of $10000 for the first 6000 users and $4000 for each additional user. (a) Draw a graph of each cost function on the same set of axes. (b) What advice can you give about which company to buy from