Answer:
(-1.5,0) (0,0.5)
Step-by-step explanation:
I graphed it
 
        
             
        
        
        
I would have used graph b. Because it shows the decrease more than graph a.
 
        
             
        
        
        
Considering there is not much information my best guess would be 175-28x
        
             
        
        
        
Answer:
This means that Alex answered 14 questions correctly
Step-by-step explanation:
<u>Step 1:  Find an equation</u>
20 * 0.7 = x
<u>Step 2:  Multiply</u>
20 * 0.7 = x
14 = x
Answer:  This means that Alex answered 14 questions correctly
 
        
                    
             
        
        
        
Answer:
?
Step-by-step explanation: what is your question