Answer:
See explanation.
Step-by-step explanation:
length = w-2
area = w*(w-2)
cost
d1 85
d2 110
d3 135
d4 160
Sam owes 4 friends $5
We can set up the equation
23 = 5x + 3
Subtract the 3 from both sides
20 = 5x
x = 4 friends