Answer:
You need to paint 9 faces to earn $15 in profit.
Step-by-step explanation:
Given : You buy painting supplies for $12, and you charge $3 per person to paint faces.
To find : How many faces will you need to paint to earn $15 in profit?
Solution :
Let x represent the number of faces painted.
According to question,
\(3x - 12 = 15\)
Solving equation,
\(3x= 15+12\)
\(3x=27\)
\(x=\frac{27}{3}\)
\(x=9\)
Therefore, You need to paint 9 faces to earn $15 in profit.
