At a particular service operation, customers form a single queue that operates on a first-come, first-served basis. There is one server. Customers arrive at the rate of 12 per hour. Using the current technology in place, the server can process 15 customers per hour. Upgrades to the technology, as listed below, would allow the server capacity to increase. For example, an expenditure of $1,000 would allow the server to process 16 customers per hour. The manager wishes to insure that the time the average customer must spend in the system is less than 10 minutes. However, he does not want to spend more money than he has to in order to meet this target. What is the minimum amount of money the manager must spend on technology (if any) to meet that standard