Hey!
This could be rewritten as: 
2x + 1 + 5x
We can add like terms together:
7x + 1
 
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
 y = 2x - 1 
y = x - 8 ------ (i)
substitute y = 2x - 1 in equation (i)
2x - 1 = x - 8
2x = x - 8 + 1
2x = x - 7
2x - x = -7
 x = -7
Substitute x value in equation (i)
y = -7 - 8 
y = -15
 
        
             
        
        
        
Karen will have to buy 14 jars to have an equal weight of peanut butter
        
             
        
        
        
If you think about how it works when cups are stacked. you will begin with the height of the cup plus the height of the lip you would then add just the heigt of the lips until you get to the height needed. so your answer should be 19 cups
        
             
        
        
        
The answer is c because of y=mx+b