Answer: The graph crosses the x-axis at x = 2.
Step-by-step explanation:
The root has a multiplicity of 3, meaning that it crosses the x axis at x=2.
 
        
             
        
        
        
Answer:Y=3
Step-by-step explanation:
 
        
             
        
        
        
Answer:
This means the mock-up tank has a volume 216 times smaller than the initial tank.
Step-by-step explanation:
The ratio between volume is given by

This means the mock-up tank has a volume 216 times smaller than the initial tank.
 
        
                    
             
        
        
        
2(x-1)=42
2x-2=42
2x=44
X=22