A) 2x + 10 equals 2x + 10
B) 7x + 3 does NOT equal 7x + 15
C) 4y - 8 doe NOT equal 4y - 2
D) 2y + 12 does NOT equal 2y - 12
Thus, A is the appropriate answer.
Hope that helped!
        
             
        
        
        
We have,

Introduce variable  such that
 such that 
The sum  is therefore
 is therefore 
So,
 (sadia's age)
 (sadia's age)
 (father's age)
 (father's age)
Hope this helps :)
 
        
             
        
        
        
50.2/3divided by 8/7
     it will equal 1 5/16 which is C
        
             
        
        
        
This is a circle.  You have a circle with a center (8, 12) with a radius of 5.
        
                    
             
        
        
        
K is -24. 10/2:5 so -24-5=-29