4 because it is the only number on the x side of the table that you can get a single value for y from
        
             
        
        
        
-0.8b+4.1c-(-3.2b)-0.1c
-(-3.2b)= 3.2b 
4.1c-0.1c=4c
-0.8b+4c+3.2b 
-0.8b+3.2b=2.4b 
4c+2.4b
        
                    
             
        
        
        
Answer: 
Step-by-step explanation:
use point-slope form

plug in given values where m is slope and y1 and x1 are values 




 
        
             
        
        
        
Answer:
543
Step-by-step explanation:
let x= total salary
0.25x=135.75
x=543