Please help me find the correct answer.

The the third choice.

Step-by-step explanation:

f(g)(x)) = x  if f and g are inverse functions:

Let f = x^2 and g = √x then

f(g(x)) =  (√x)^2 = x.

and   (√x)^2 = √(x^2)

11 feet 6 inches and 8 feet 6 inches

set each factor equal to 0

4x-3 = 0

2x-1 = 0

solve for x.

4x-3=0

4x=3

x= 3/4

solve for x. 

2x-1= 0

2x= 1

x= 1/2

eventually after a few more steps, your answer should be 1/2 is less than or equal to x and 3/4 is greater than or equal to x