Hey there! Hello!
I believe what this question (more of a statement) is asking is to identify what a letter that represents an unknown number is called. Most of the time, i refer to it as just a variable, or an unknown variable. It can also be referred to as just an unknown value. 
Feel free to ask me any additional questions if you have any! :-)
        
                    
             
        
        
        
Hi!
We can see here that this is a composition question.
And since the composition of g of f of x is x, we can conclude that g(x) is the inverse of f(x) (if you're confused, search up the definition of an inverse function).
To find an inverse function, we can take the f(x) function and change the positions of the x and y variables.







Which is answer choice A, to check your work, you can solve the composition of g(f(x)), which will get you x.



2s cancel.

The natural log and e cancel.

 s cancel.
s cancel.

7s cancel.

Hope this helps!
 
        
             
        
        
        
Answer:
4 times more
Step-by-step explanation:
80/20=4
  
        
             
        
        
        
The answer is c hopefully it helps you
        
             
        
        
        
Answer:
Answer should be 5
Step-by-step explanation: