Answer:
w^2 + 5w = 300
Step-by-step explanation:
A= length x width
A =300
Width = w
length = w + 5
Therefore
300 = (w) x (w + 5)
300 = w^2 + 5w
Answer: I think it would be 30 ft
Step-by-step explanation: You would do LxW and get the anwer.