You buy painting supplies for $12, and you charge $3 per person to paint faces. How many faces will you need to paint earn $15 in profit?

9 faces

Step-by-step explanation:

3*4=$12 in supplies

so that is 4 faces just to get your money's worth

then to have profit you would have to do another face otherwise you only broke even.

So then you have to do 5 more to get $15 profit so you would have to do a total of 9 faces

First you do 12+15 which is 27.

Then you do 27/3 Which is 9

So you will need to paint 9 peoples faces to earn $15 Profit.