. She explains that her only costs are the coffee beans and the paper cups she serves the coffee in. She uses exactly 1 ounce of coffee beans per cup and pays 100 Euros for 250 ounces of coffee beans, and 100 Euros for 1000 paper cups. She does, however, start every morning by giving away 4 cups of coffee to some of the townspeople experiencing homelessness. (a) (3 points) Write down her daily cost function C(13). (b) (2 points) What are her daily xed costs? . (10 points) If Mina currently sells 10 cups a day, use marginal analysis to estimate the change in prot resulting from serving 1 more per day. Leave your answer in exact form. . (5 points) Estimate the change in price needed to increase expected sales by one cup per day. . (15 points) You notice that one of the paintings hung in the cafe is an incredibly faithful recreation of the famous Recitiazione by Zaccaria Garritti, which was stolen exactly 5 years ago, moments after it sold for 25 million Euros at auction. Assuming that it has appreciated at 12 percent per year, estimate the present day value of the painting