Answer:
The function is

The graph is attached.
Step-by-step explanation:
We have a function g(x) and we need to graph a new function that is function of g(x).
The final function is

We start by calculating g(x-2):

Then, we can calculate f(x) as:

It is rational. Any number that can be described as a fraction is rational while those that do not are irrational.
-0.28764 is the same as -(28764/100000) and positive, negative does not matter.
Fourteen go to wolfram and it will show you the details
Like terms have the same unknown
25 ab has a and b
look for terms with both a AND b
answer is C