Jordan Computer Services, Incorporated, has been in business for six months. The following are basic operating data for that period: Month September October July August November Service hours 112 138 258 428 322 December 334 Revenue $ 6,720 $ 8,280 $ 15,480 $ 25,680 Operating costs $ 4,290 $ 5,210 $ 7,150 $ 11,120 $ 19,320 $ 9,170 $ 20,040 $ 10,590 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. Complete this question by entering your answers in the tabs below. Required A Required B Required C What is the average service revenue per hour in each month and the overall average for the six-month period? Month Average service revenue per hour July August September October Cured A November Required B > December Total Average