From 100 to 80 is 8/10, so the recursive formula is
an=a(n-1)*1/8 
or 
an= a1*1/8(n-1)
an=a1*(n-1)/8
 
        
             
        
        
        
Answer:
x= -4/9
Step-by-step explanation:
HOPE THIS HELPS!!!! :)
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Answer:
B
Step-by-step explanation:
I don't know how to explain it but
10/2=5 (Driver A)
20/2= 10 (Driver B)
Sorry if it's not right
 
        
             
        
        
        
Answer:
2/7
Step-by-step explanation:
This is because the slope is positive so that gets rid of both of the negatives, and the line is not straight but if the line was horizontally straight then your slope would be zero. So I just did process of elimination.