Sorry but im terrible at math
        
             
        
        
        
18 = .75x
/.75   /.75 (divide both sides by .75 to isolate x)
24 = x
24 total students
Hope this helps!
        
                    
             
        
        
        
Answer: The answer is -24 if you start at 0 points
Step-by-step explanation:
3 x 8 = 24 if it starts at zero put a negative symbol (-) to 24.
 
        
             
        
        
        
Hsndmf Nd didjsuduysysbsbsndndhyz
        
             
        
        
        

The Quadratic Function has the domain as the set of all real numbers.
For the range, start from minimum value to maximum value. 
But because the parabola is downward as a < 0. Thus, there are no minimum value but the maximum value instead. 
Therefore the range is y <= -4