Answer: x= 1/54
Explained: easy mental math :p
        
                    
             
        
        
        
Answer: (0,-4)
explanation: write in vertex form and use this form to find the vertex ( h , k ) 
 
        
             
        
        
        
Five times x plus seven equals eighteen 
        
                    
             
        
        
        
<h2><u>D:</u></h2><h2><em /></h2><h2><em>The awnser is </em><u><em>4</em></u><em>!! Hope this helps!! <3</em></h2>
        
                    
             
        
        
        
Well as it looks like to me the cords of the a,b,c are 2,3,1