Assume you work in Saint Lucio Hospital as an accountant and you have been asked by your supervisor to provide the number of blood tests performed and the related costs over the last nine months. The next morning you submitted a report to your supervisor (see below): Month Blood Blood Tests Test Costs Performed $ 5,695 33,690 Is 6,660 38,470 January February March 5,045 $ 29,774 April 4,605 $ 27,366 May 4,790 $ 28,856 June 3,800 23,270 $ July 4,415 26,276 $ August 5,235 30,578 Septembe 5,365 $ 31,752 r Required: a. Using the high-low method, estimate the cost formula for blood tests. (10 marks) b. Using the cost formula, you derived above, what blood test costs would you expect to be incurred during a month in which 6,500 blood tests are performed? (5 marks) C. Why is the high-low method used by some organizations? (5 marks) 1 d. In addition to having variable and fixed costs, companies incur mixed costs as well. Explain briefly what mixed costs are and provide examples of mixed costs