Can I get help solving the parts of this question i got wrong please?

conomic analysis of the waiting line system, pobotics uses $38 per hour cost for customers waiking during the repair process. (a) What are the arrival rate and service rate in Jobs per hour? (Round your answers to four decimal places.) = b) Show the operating characteristics, (Round your arswers to four decimal places, Report time in hours.) La=L=Wa=W=hh Show the total cost per hour. (Eogress the total cost per hour in dollars. Round your answer to the nearest cent.) answers to four decimal places. Pieport time in hours.] wq=w=hh Show the total cost per bour. (Evoress the total cost per hour in dollars. Round your answer to the nearest cent:) TC=$ cent. Enter 0 if there are no savings.) The average savings over a 40 -hour work week amount to $ - Aased on this, the director's argument should be