Answer:
5)
8, 6, 4, 2= 67°
5,7,1,3= 113°
6) not sure about this one!
Not sure but i guess 25 %ile is 55/4=13.75 and 80%ile=80*55/100=44
Let
x------> the number of multiple choice question
y------> the number of free response question
we know that
-----> equation A

-----> equation B
Substitute equation B in equation A
Find the value of x


therefore
<u>the answer is</u>
the number of multiple choice question are 
the number of free response question are 
The volume equals length x width x height so multiply all of those with a calculator and you’ll get your answer hope I helped :)