Sketch the level curves 
of the function for the indicated values of k. 
Definitions:
M/M/S System
A mathematical model used in queue theory representing a system with multiple servers where arrivals and service times follow a Poisson and exponential distribution respectively.
Single Queue
A method of organizing waiting lines that directs all customers to form one line that feeds into multiple service points.
Model A
A specific version or type of a product or system, often denoting its design or features.
M/M/1 System
A model in queue theory representing a system with a single server where arrivals follow a Poisson process and service times are exponentially distributed.
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