Here is an attachment with the answer. I hope this helps.
 
        
                    
             
        
        
        
I see this as a basic equation. 
If she starts at point x, 8 feet, then goes down another 13, she is adding to the number of feet she traveled down.
So your answer would be 8+13=21
If this isn't what you needed, because I am not sure what math you are taking, let me know if I can help you more! 
 
        
                    
             
        
        
        
Answer: 2:7 times
Step-by-step explanation: hope it helps u
 
        
             
        
        
        
Answer:
Around 7830 dollars
Step-by-step explanation
Times 15,000 by 0.85, you'll get 12,750. Times each product by 0.85 and you'll get around 7830 dollars
 
        
             
        
        
        
Answer:
what
Step-by-step explanation: