Answer:
Only the equation is a function
Step-by-step explanation:
we have

Find out the inverse of f(x)
Let
y=f(x)

Exchange the variables (x for y and y for x)

Isolate the variable y

square root both sides

Let


The inverse function is not a function (because for one input value the function has two different output values)
therefore
Only the equation is a function
Answer:
lets say that the length is L and the width is W. With the given info, we can say that L=5W.
We know that the perimeter is all four sides added, so..
5W*4=20W
20W=96
W=4.8
L= 5*4.8=24
Area is equal to 24*4.8, which is 115.2
Voila! Your answer is 115.2 sq. ft!
The answer is -35 because it says below sea level