If you are looking for the anwser it's 2,040
9000 x .08 = 720
720 x 5= 3600
9000-3600= 5400
5,400
Is it 1/2×b×h
to find the area
or
base×height
Let each side perpendicular to the river be "x".Then the side parallel to the river is "400-2x".
The formula for Area = width*length
A(x) = x(400-2x)
A(x) = 400x - 2x^2
You have a quadratic with a = -2 and b = 400
Maximum Area occurs where x = -b/2a = -400/(2*-2) = 100 ft. (width)
length = 400-2x = 400-2*100 = 200 ft (length)
Answer:
Step-by-step explanation:
