Waiting for answer This question has not been answered yet. You can hire a professional tutor to get the answer.
stat assignment
solve the equations in the attachments, which are:
7.2.1( a and b)
7.2.8 ( a and b)
7.2.9
7.3.3
7.3.9
7.3.23
7.3.32
7.3.33
They are all in the attcahment files.