Three companies can supply Carrefour company with some calculation software. Each company has a different pricing structure: Company 1 provides a site license which costs $520000 and can be used by anyone at the pharmaceutical company; Company 2 charges $4000 per user; Company 3 charges a fixed amount of $160000 for the first 240 users and $2000 for each additional user. (a) Draw a graph of each cost function on the same set of axes. (b) What advice can you give to carrefour about which company to buy from? Three companies can supply Carrefour company with some calculation software. Each company has a different pricing structure: Company 1 provides a site license which costs $520000 and can be used by anyone at the pharmaceutical company; Company 2 charges $4000 per user; Company 3 charges a fixed amount of $160000 for the first 240 users and $2000 for each additional user. (a) Draw a graph of each cost function on the same set of axes. (b) What advice can you give to carrefour about which company to buy from