Answer:
Part a) The equation is [tex]84+p=8p[/tex]
Part b) [tex]p=12\ paintings[/tex]
Step-by-step explanation:
Let
p -----> the number of paintings
we know that
Break even is when sales are equal to cost.
The linear equation that represent this problem is
[tex]84+p=8p[/tex]
Solve for p
Subtract p both sides
[tex]84+p-p=8p-p[/tex]
[tex]84=7p[/tex]
Divide by 7 both sides
[tex]84/7=7p/7[/tex]
[tex]12=p[/tex]
Rewrite
[tex]p=12\ paintings[/tex]
Check the solution
[tex]84+p=8p[/tex]
substitute the value of p
[tex]84+12=8(12)[/tex]
[tex]\$96=\$96[/tex] ----> is ok