The answer is -3.
If we add positive one/+1 to negative four/-4, we subtract +1 from -4, giving us -3.
 
        
                    
             
        
        
        
Kevin makes $840 in 4 weeks. 
how much he makes per day $42
(3.5* 12= 42)
How much he makes per week
(42*5=210)
        
             
        
        
        
A- they are parallel because they have equal slopes.