Part b$.$ This part includes $3$ calculation questions regarding Chapter $4$ Forecasting. Show your steps to earn full credit. Note: You can either type your answer in this word file, or you can print it out, work on it$,$ and scan the file back in$.$ I$\text{'}$m fine with either option, and whatever the option you choose, it should be the second file you turn in for this assignment.

As you can see in the following table, demand for heart transplant surgery at Washington General Hospital has increased steadily in the past few years:

$\backslash$table$[[$YEAR$,1,2,3,4,5,6],[$HEART TRANSPLANTS,$45,50,52,56,58,?$