Can someone please explain how to get x on the chart like wh

Can someone please explain how to get x on the chart? like where does 900 on 3 jobs and 1800 on 4 jobs or more come from?? PLEASE HELP

Suppose that our company performs DNA analysis for a law enforcement agency. We currently have 1 machine that is essential to performing the analysis. When an analysis is performed, the machine is in use for half of the day Thus, each machine of this type can perform at most two DNA analyses per day. Based on past experience, the distribution of analyses needing to be performed on any given day are as follows: obs or more 17 06 900 1800 1800 1800 1800 153 432 252 180 108 On days with three or more available jobs to perform, since we cannot perform more than two, the law enforcement agency gives the extra jobs to our competitor. We are considering purchasing a second machine. For cach analysis that the machine is in use, we profit S900. What is the yearly expected value of this new machine? (Assume 365 days per year -no weckends or holidays) a) Determine the expected value per day of the second machine and for the entire year. Daily expected value is S1125 and the yearly is S410,625 b) Determine the expected value of adding a third machine for the entire year obs or morC 06 0 900 1800 1800 0 126 180 108 Daily expected value is S414 and the yearly is S151,110.

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