Answer:
-3
Step-by-step explanation:
 
        
             
        
        
        
Answer:
17. 11x - 11y  or  11x + (-11y)
18. -7.52 - 2.8  or  -7.52 + (-2.8)
19. 41x - 21y - 6
20. -3y -8xy
Step-by-step explanation:
17. Use the distributive property. 
18. Use the distributive property to multiply each number inside the parentheses by 0.4
19. Multiply each number inside the parenthese by 7.
20.Multiply each term in parenthese by y.
 
        
             
        
        
        
Answer:
k
Step-by-step explanation:
k
 
        
             
        
        
        
As an improper fraction, it would be -11/4
As a mixed number, it would be
-2 and 3/4
        
             
        
        
        
You will need $4270 more
(9500+1500+1870)-(6100+2500)
12870-8600
4270