Rooney Computer Services, Incorporated, has been in business for six months. The following are basic operating data for that period: Month July August September October November December Service hours 116 140 262 426 316 324 Revenue $ 6, 148 $ 7, 420 $ 13, 886 $ 22,578 $ 16, 748 $ 17, 172 Operating costs $ 4, 220 $ 5, 250 $ 7, 170 $ 11, 110 $ 9, 130 $ 10,530 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.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. x Answer is complete but not entirely correct. Complete this question by entering your answers in the tabs below. Required A Required B Required C Determine the average contribution margin per hour. Note: Round your answer to 2 decimal places. Average contribution margin per hour $ 23.30 (X