Answer:
[(a)^2-(4^2)](a+4)
Step-by-step explanation:
 
        
             
        
        
        
Answer:
127
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
Exactly one solution
Step-by-step explanation:
Because they two lines dont have the same slope, they must have only one solution. 
 
        
                    
             
        
        
        
<span>Compute unit rates associated with ratios of fractions, including ratios of lengths, areas and other quantities measured in like or different units. For example, if a person walks 1/2 mile in each 1/4 hour, compute the unit rate as the complex fraction 1/2/1/4 miles per hour, equivalently 2 miles per hour. ... hope this helps.</span>
        
             
        
        
        
Answer:
True 
Step-by-step explanation:
Some of our energy comes from electrical power plants