Answer:
x=a+b
Step-by-step explanation:
Just move a to the other side (by adding it)
 
        
                    
             
        
        
        
A = 28000(0.9275)^5
a = 19219
$19,219 is the answer
Hoped this helped 
        
             
        
        
        
Retype your question that way we can help answer
        
                    
             
        
        
        
For a parallel line the slope of the lines/equations will be the same but for perpendicular line the slope will be the negative reciprocal
-(1/4)*x+b
b=2-(-1/4)*8