Answer:
Dave needs to mow 14 lawns to have enough money to buy a bike.
Step-by-step explanation:
180-40=140, 140/10=14. Dave needs to mow 14 lawns to have enough to buy a bike.
 
        
             
        
        
        
9 x 15 = ( 9 x 9) + (9 x 15)
        
                    
             
        
        
        
I believe that -3 is less than 3x-6 because if you look at their graph -3’s graph is below 3x-6 graph
        
             
        
        
        
Y=-12
explanation multiply x by -3 to get y