20 points! Need some help with this. :D

The labor fee is $377

The fencing material costs $4 per foot

s equals the number of feet of fencing material

Step-by-step explanation:

The constant fee is the value that does not change, which is $377.

The only value that is dependable (relies on another variable) is the amount of fencing material, and for each foot of material, it costs $4.

s is the dependant variable, which means it can change. The only value that can change is the number of feet of material.

180

step-by-step explanation:

12-2=10

20-2=18

18x10=180