Answer: 
Step-by-step explanation:
Substitute the value of the <u><em>variable</em></u> into the <u><em>equation</em></u> and simplify.
I evaluate and found the exact value: 4

If you want me to Find the Linearization at h=5: Use the formula 
 
  to find the linearization.
Answer(Find the Linearization at h=5): 
 
        
                    
             
        
        
        
The new price is 52.50
30x2=60
30/4=7.5
7.5x3=22.5
22.50+30= 52.50
        
             
        
        
        
I think it’s direct variation y= 12/x i’m note 100% sure tho