Jordan Computer Services, Incorporated, has been in business for six months. The following are basic operating data for that period: Month July August September Service hours Revenue 118 $ 6,372 136 260 October 420 November December 320 328 Operating costs $ 4,280 $ 7,344 $ 5,230 $ 14,040 $ 7,190 $ 22,680 $ 11,160 $ 17,280 $ 9,110 $ 17,712 $ 10,540 Required a. What is the average service revenue per hour in each month and the overall average for the six-month period? b. Use the high-low method to estimate the total monthly fixed cost and the variable cost per hour. c. Determine the average contribution margin per hour. Month Average service revenue per hour July August September October November December Total Average $ 0 < Required A Required B > Variable cost Fixed cost per hour per month Pea Determine the average contribution margin per hour. Note: Round your answer to 2 decimal places. Average contribution margin per hour