Answer:
B = (C-Ax)/y
Step-by-step explanation:
Solve for B.
Ax+By=C
making B the subject of formula '
Ax+By=C
subtract Ax from both sides 
By = C-Ax
By = C-Ax
divide both sides by y 
B = (C-Ax)/y
 
        
                    
             
        
        
        
(6x + 30)+(2x+6)= 180
8x +36= 180
8x= 144
X= 18 
So 2x+6 = 42 
And 6x+30 = 138
        
             
        
        
        
Answer:
C) 
Step-by-step explanation:
f(n) = 26 + 9(n-1)