The answer i got was 
n=-3/4,n=-1
        
             
        
        
        
400-10x. X is how many weeks
        
                    
             
        
        
        
Answer:
12
Step-by-step explanation:
 
        
             
        
        
        
Answer:
1 1/3
Step-by-step explanation:
hope this helps!! : D
 
        
                    
             
        
        
        
9514 1404 393
Answer:
- 6x +y = -6
 - 6x -y = 8
 - 5x +y = 13
 
Step-by-step explanation:
To rewrite these equations from point-slope form to standard form, you can do the following:
- eliminate parentheses
 - subtract the x-term
 - subtract the constant on the left
 - if the coefficient of x is negative, multiply by -1
 
Of course, any operation you do must be done <em>to both sides of the equation</em>.
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1. y -6 = -6(x +2)
   y -6 = -6x -12 . . . . . eliminate parentheses
   6x +y -6 = -12 . . . . . add 6x
   6x +y = -6 . . . . . . . . add 6
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2. y +2 = 6(x -1)
   y +2 = 6x -6
   -6x +y +2 = -6
   -6x +y = -8
   6x -y = 8 . . . . . . . . multiply by -1
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3. y -3 = -5(x -2)
   y -3 = -5x +10
   5x +y -3 = 10
   5x +y = 13
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<em>Additional comment</em>
The "standard form" of a linear equation is ax+by=c for integers a, b, c. The leading coefficient (generally, 'a') should be positive, and all coefficients should be mutually prime (have no common factors). That is why we multiply by -1 in problem 2.