which of the following expressions represents the verbal description below

The correct answer is the third option [tex] \frac{(4+9x)^3}{5x(x-1)} [/tex]

Explanation : 

The numerator 
9 times x ⇒⇒⇒ 9x
the sum of 4 and 9 times x ⇒⇒⇒ 4+9x
the cube of the sum ⇒⇒⇒ (4+9x)³

The denominator:
5 times x ⇒⇒⇒ 5x
the difference of x and 1 ⇒⇒⇒ x-1
the product of them ⇒⇒⇒ 5x(x-1)