2^-2 would become 1/2^2 which becomes 1/4.
        
                    
             
        
        
        
Answer:
Option B  13 units is correct.
Step-by-step explanation:
The formula used to find distance between 2 points is:
 
 
x₁ = 12 x₂ = 0 y₁= 9 and y₂=4
Putting values in the formula:

So, Option B  13 units is correct.
 
        
                    
             
        
        
        
Answer:
282.74
Step-by-step explanation:
 
        
                    
             
        
        
        
<span>The number of workers must be increased by 28%.</span>