Answer:
31.41
Step-by-step explanation:
Substitute 
 
        
                    
             
        
        
        
Answer:

Step-by-step explanation:
Check the attached photo for the details
 
        
             
        
        
        
It is substitution. Because you are substituting 3=y into x+5=3
        
             
        
        
        
The correct answer is B.) 4
        
             
        
        
        
Answer:
1 3/5
Step-by-step explanation:
The distance between 1 and 2 is 5 units. Therefore, Point D is 3/5 of the way to 2.