Answer:
quadrant 1
Step-by-step explanation:
 
        
             
        
        
        
If i read this correctly it should be $90. 10x5= $50 and that plus $40 equals $90 altogether
        
             
        
        
        
Answer:
21<em>a</em> − 8
Step-by-step explanation:
 
        
             
        
        
        
Step-by-step explanation:
In this question we need to decrease 216 by  or 37.5 %.
 or 37.5 %.
For this, firstly find 37.5 % of 216. 

Now subtracting 81 from 216 to find decrease of 216 by 37.5 %.
So,
216-81 = 135
Hence, 135 is the decrease of 216 by 37.5 %.