Eight car dealerships reported the number of cars they sold last month.

what is the interquartile range of this set of data?

A-5
B-7.5
C-12.5
D-23

Step-by-step explanation:

You'll need to share the set of data if you want a precise answer.

But here's how to find the IQR:

1.  Arrange the data in ascending (increasing) order

2.  Identify the median.   This divides the list of data into two parts.

3.  Find Q1 and Q3.  They are the medians of these two parts.

4   Subtract Q1 from Q3.  The result is the IQR that you wanted.  

a.) list the factors of 40.

1/2/4/5/8/10/20/40

b.) list the factors of 40 that represent the number of cans that could be on each shelf.

5

c.) how many different arrangements of cans are possible?

just one because if you put more on one shelf you will go way over 40 and the cabinet will probably break.

d.) what are the possible arrangements of the cans?

put 5 cans on each self to reach 40 cans in total.

e.) which arrangement uses all the shelves?

5 because you can put 5 cans on each shelf, and since there are 8 shelfs you are equally going to get 40 cans.