Ok to find dy/dx of x+2y=xy we take derivative of both sides with respect to x
1+2dy/dx = x*dy/dx +y*dx/dx
1+ 2dy/dx = x*dy/dx + y* 1
2dy/dx +1 = x*dy/dx + y
2y’ + 1 = xy’ + y
2y’ + 1 - xy’ = y
2y’ -xy’ = y - 1
y’(2-x) = y - 1
so we get finally 
y’= (y-1)/(2-x) 
Hope this helps you understand the concept! Any questions please ask! Thank you so much!!
        
             
        
        
        
Answer:
C. The amount Kayla charges per children
Step-by-step explanation:
Y=mx+b
m=Slope 
x=Number of children
m=2 means 2 dollars per x(children)
 
        
             
        
        
        
Answer
The value of x is 180 degrees 
Explanation  
you add 150 and 30 to get the value of X plus if you look carefully you can see that in the image x is at 180 degrees.