2. As a purchasing manager, you are required to purchase internet service for your corporation. You have short-listed two suppliers: Goofey and Snoopy. And their charges are as follows: Goofey: A minimum of $1,000 for up to 10,000 minutes $1,000 plus 7 cents per minute for above 10,000 minutes of usage Snoopy: There is no minimum charge and charges are 8 cents per minute. a. Write the two cost functions b. Plot the two cost functions on a graph paper. c. Over what range of usage would you select Goofey or Snoopy. NOTE: You are required to use a graph paper or print graph papers on Microsoft Excel and then draw graphs by hand showing points clearly