Variables are any letter so in the case of your equation the variables would be f and x.
Answer:
I think letter A would be the answer
Answer:
44.057 to nearest hundredth
44.06
Answer:
D
Step-by-step explanation:
We will use the radical property
to simplify this.
The problem is 
We can simplify this as:

Now we can use the property of radicals,
, to write as:

D is right answer.