Question A2 (9 Marks) Define variable cost and fixed cost. Give an example of each. a. b. Anna Tan, the financial manager at the Yellow Dragon restaurant, is checking to see whether there is any relationship between newspaper advertising and sales revenues at the restaurant. She obtains the following data for the past 9 months: Month Revenues Advertising costs April $200 000 $52 000 May 270 000 65 000 June 320 000 80 000 July 480 000 90 000 430 000 100 000 August September 450 000 110 000 October 540 000 120 000 November 670 000 180 000 751 000 197 000 Required: i. Use the high low method to calculate the function, relating advertising costs and revenues ii. Using the high-low equation, what is the increase in revenues for each $10 000 spent on advertising withi n the relevant range? (3+6-9 Marks)