1) You are the managing partner of an accounting firm in the New Westminster area. You note over the year there is a relationship between the number of hours billed to clients and the staff salary paid. The following is the data you have accumulated. You plan to use the High-Low method. (6) (Calculations to 3 decimals) Month Staff Salaries Hours Billed $400,000 4,000 350,000 3,100 435,000 5,000 477,000 6,000 575,000 8,000 529,000 7,000 a. Calculate the variable cost. (1) b. Calculate the fixed costs (1) c. Determine the cost function equation (2) d. What is a better alternative to the high-low method and indicate why. (2)