Answer:
(See explanation)
Step-by-step explanation:
The function is:
[tex]f(x) = \frac{1}{2}\cdot 27 \cdot \frac{2\cdot x}{3}[/tex]
Its simplified form is presented hereafter:
[tex]f(x) = 9\cdot x[/tex]
The resultant expression is a linear function, first-order polynomial, whose domain and range are the set of the real numbers.