Study this circle graph and answer the questions that follow.
8%
10%
18%
28%
36%
a. Which category represents the largest​ expenditure?
b. Which category represents the smallest​ expenditure?
c. If a student spent a total of ​$2500​, how much of this went toward tools and lab fees​ combined?
d. If a student spent ​$300 in material​ fees, how much would she spend on books and lab​ manuals