NEED HELP ONLY WITH THE CHARTDONT GET WHERE DOES X COME FROM

NEED HELP ONLY WITH THE CHART..DONT GET WHERE DOES X COME FROM.

Can someone please explain how to get x in the chart? like the 900 and 1800 on the first chart.

I KNOW HOW TO GET THE DAILY AND YEARLY EXPECTED VALUE.

Supposc that our company performs DNA analysis for a law enforcement agency. We currently have 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: Jobs 7 or morc 900 1800 1800 1800 1800 153 432 252 180 08 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 ycarly expected valuc of this new machine? (Assume 365 days per ycar-no weekends or holidays) a) Determine the expected value per day of the second machine and for the entire ycar 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 7 or more 0 900 1800 1800 0 126 180 108 Daily expected value is S414 and the yearly is S151,110

Solution

For each machine profit is 900 and at any day more than 2 machines cannot be used

Hence either one machine with profit 900 or two machines with profit 1800.

It cannot exceed 1800 as more than 2 machines cannot be used

Hence no of machines used can be 0 or 1 or 2

Hence profit would be 0, 900 or 1800