So do 21/7 to give you how much they do in a day. The answer is three so they do 3 aceres in a day.
        
             
        
        
        
Answer:
22x^2 -10xy + 12x
Step-by-step explanation:
To add and subtract polynomials, combine only like terms. When doing it vertically, stack polynomials and line up the same bases and exponents. Once this is done, simply add and subtract the coefficients. 
   10x^2 + 12xy + 4x
+ 12x^2 -22xy + 8x 
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22x^2 -10xy + 12x
Here we added 10 + 12 = 22, 12 + -22 = -10 and 4 + 8 = 12.
 
        
             
        
        
        
Answer:find the slope
Step-by-step explanation:
I don't know if you know how to find the slope if not reply back. But that's what the equation wants you to do.
 
        
             
        
        
        
Answer:
-15
Step-by-step explanation:
the new temperature since it went down 
-12-3= -15
 
        
                    
             
        
        
        
(X - 2)×(X + 5) = 0
X= 2 or -5