What is the optimal number of servers to have to minimize the cost? Assume that the arrival rate is 11 per hour and the service rate is 10 per hour for each server. Your analysis has determined that servers are $40 per hour and the cost of customers waiting is $30 per hour. What is the server cost, wait cost and total cost per hour for 2 servers? What is the server cost, wait cost and total cost per hour for 3 servers