<span>2 + 13x, because (19x − 6x) + 2 = 13x + 2 = 2 + 13x</span>
        
                    
             
        
        
        
Answer:
9. It seems he was inactive/taking a break, as the line is completely straight.
I'm not sure about the others, but I hope that helps!
Step-by-step explanation:
 
        
             
        
        
        
Answer:
distance is 5 units 
Step-by-step explanation:
plug in values
 
        
             
        
        
        
Answer:
y=4x-1
Step-by-step explanation:
 
        
             
        
        
        
Answer:  The cost of one sandwich is $4.25 and the cost of one cup of coffee is $2.25.
Step-by-step explanation:
Let x be the cost of one sandwich and y be the cost of one cup of coffee.
By considering the given situation, we have the following equations :-

Multiply 2 on both sides of equation (2) , we get

Subtract equation (1) from equation (3), we get

Put value of y in (1), we get

Hence, the cost of one sandwich is $4.25 and the cost of one cup of coffee is $2.25.