1) Whenever you do a process flow problem, you should draw a picture. Arrows denote the flow of jobs. A triangle denotes jobs waiting to be processed. A circle or rectangle denotes the jobs being processed. This set of arrows/triangle/circles creates one building block or "lego" which is them simply duplicated for each process step. Refer to the picture below for an example. In this "Lego," what might the "3 R's" (R₁, R₂, and R₃) denote? *Did I get this correct?

R- Reading Writing, and Arithmetic. 3 different Resources are used to process the jobs. The rates of arrivals of 3 different types of customers to a petrol station (assuming you are analyzing a petrol station). The rates at which 3 different job types could be processed at, for example, the DMV, if the resource were continually busy