Step-by-step explanation:
What is it that you need help with exactly?
A+B=C
It's already been solved. Do you need it in a different form? 
(a/(b/c)
 
        
             
        
        
        
For this case we must find the domain of the following function:

By definition, the domain of a function is given by all the values for which the function is defined.
In this case, the argument of the expression must be greater than 0 to be defined.

Thus, the domain of the function is given by all the values of x greater than -2.
Answer:
Domain: 
 
        
             
        
        
        
4x-4>20
Step 1: Add four to both sides 
4x-4+4>20+4
4x>24
Step 2: Divide both sides by 4 
4x divided by 4 and 24 divided by 4
Answer: x>6
Kahal accidentally subtracted instead of adding. He made a mistake in step 2.
        
                    
             
        
        
        
Answer: 
He runs 2.5 meters per second
Step-by-step explanation: 
all you do is divide 75/30 and the answer is 2.5.