Answer:
The answer is "3".
Step-by-step explanation:
If the compression factor of 3 is modified, the k value is 3 For a function f(x) the horizontal extending or compression is provided by g = f (bx) 
Here b is constant. Where b is constant. 
If b> 0, the function graph is condensed. The fact that perhaps the function is transformed by an encoding factor of 3 is given in the question. 

 
        
             
        
        
        
5.75 an hour good luck lollllllll
        
             
        
        
        
3(5)+15= 30 
because BIDMAS so we would multiply 3 by 5 then add the answer which would be 15 to 15 and we would get 30.
        
                    
             
        
        
        
b is decreased by 25% which means there will be (-ve) sign. 
<h3>So,</h3>

- <em>Option 5 is correct!!~</em>