Answer:
A=
Step-by-step explanation:
The area of a square can be found by multipling two of the side lengths. And since all the sides of a sqaures are the same we just multiply (4x-5)(4x-5)=A or =A.
Put 9 in for b
N=9-4
N=5
it is 10% because 10 percent got better in the experiment
$92.50
$72 - $35 = 37
37 / 0.40 = 92.5
Answer = $92.50