Two coworkers picked up some writing instruments at
the office supply store. Ava
selected 9 boxes of pencils
and 4 boxes of ballpoint
pens, paying $30. Next, Tony
spent $39 on 6 boxes of
pencils and 9 boxes of
ballpoint pens. How much
does a box of each cost? using elimination method.

2/3x + 7 = 29

step-by-step explanation:

two thirds = 2/3

plus a number = x

at least 29 = 29

there for you should get 2/3x + 7 = 29

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.

im not sure what this means: mc011-7.jpg

step-by-step explanation: