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Please read BOTH questions CAREFULLY and answer BOTH OF THE QUESTIONS CORRECTLY. ANY wrong OR incomplete answers WILL BE DOWNVOTED. Please DOUBLE CHECK your work BEFORE posting the solution. Thank you!

On a toll road, there are 7 lanes for drivers to pay their toll. Customer interarrival times are random, with an exponential distribution. Service times are random, with an exponential distribution. What is the proper description for this queueing system. An M/M/4 system has an arrival rate of 15 customers per hour. Each server has a service rate of 7 customers per hour. a. What is the utilization factor for this system? Note: Round your answer to 3 decimal place. Utilization Factor b. If all servers are kept busy, how many services will be completed per hour on average? Note: Round your answer to the nearest whole number. Services Completed