Help quick please

What is the interquartile range? (Check pic)
The interquartile range is _

The value of the expression 16-^3/4 8 1/8 -6 6 1/40 1/64

Find the missing factor. write your answer inexponential form.9^2=9^4×

Novak gives 9 packs of paper to a group of 5 students. if the group shares the paper equally how many packs of paper does each student get. write the a answer as a mixed number