Found this when I was doing my own work, hope this helps.
 
        
        
        
Answer:
-1.9b + 7.8
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
After 15 days they'll both have $10
Explanation:
100 (Xavier's total)- 6x (6 dollars every day) = 160 (Zach's total amount) -10x (10 dollars every day) 

+10x on both sides

-100 on both sides 

/4 on both sides
 
 
  
        
             
        
        
        
Answer:
The answer is {36}
Step-by-step explanation:
I took the quiz hope this helps