Answer:
I think it is 13/15 (0,8666666...) but I am not sure
The function of the length z in meters of the side parallel to the wall is A(z) = z/2(210 - z)
<h3>How to write a function of the length z in meters of the side parallel to the wall?</h3>
The given parameters are:
Perimeter = 210 meters
Let the length parallel to the wall be represented as z and the width be x
So, the perimeter of the fence is
P = 2x + z
This gives
210 = 2x + z
Make x the subject
x = 1/2(210 - z)
The area of the wall is calculated as
A = xz
So, we have
A = 1/2(210 - z) * z
This gives
A = z/2(210 - z)
Rewrite as
A(z) = z/2(210 - z)
Hence, the function of the length z in meters of the side parallel to the wall is A(z) = z/2(210 - z)
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So first thing we have to realise is that we have to make them have equal denominators. So,
.
Now order the fractions....so,
Now we can see why 
is greater than 
but less than 
For this case we have the following functions:
We have to:
is given by:
Thus, the correct option is the option is A.
On the other hand,
Thus, the correct option is the option is A.
We also have:
Thus, the correct option is the option is B.
Last we have:
Thus, the correct option is the option is C.
ANswer:
Option A, A, B, C
