Answer: d
Step-by-step explanation: 
 
        
                    
             
        
        
        
You didn’t give the answers
        
             
        
        
        
2t = 40 - 2w
t = 40/2 (-2/2)w
t = 20 - w -- rearrange
t = -w + 20
t + w = 15
t = -w + 15
same slope, different y intercepts.....parallel lines, no solutions
        
             
        
        
        
7 groups 6 groups of 4 and 1 group of five.
Step-by-step explanation:
I took 29 dots and split them up into 6 groups and had a remander or 5.