Munoz Computer Services, Incorporated, has been in business for six months. The following are basic operating data for that period: Service hours Month September October 254 July August November 110 132 430 320 December 324 Revenue $ 6,270 Operating costs 7,524 $ 4,300 $ 5,240 $ $ 14,478 $ 24,510 $ 7,130 $ 11,180 $ 18,240 $ 9,160 $ 10,580 $ 18,468 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 November Required A Required B > December Total Average