Answer: 100
Step-by-step explanation: because I just got a 10/10
 
        
             
        
        
        
Answer:
Step-by-step explanation:
<u>Given:</u>
<u>Substitute x= -3:</u>
- f(-3) = (-3)² - 4 = 9 - 4 = 5
 
        
             
        
        
        
He donated 18 books per month. you first finds the difference of the books then do use the number of books by the number of months (in this case it was 5 months)
        
                    
             
        
        
        
You have to add 20 to the whole thing in order for it to work