Step-by-step explanation:
when we get the common ratio that  must be equal
r=6/2=18/6=54/18=3    equal
So it is geometric
By using this equation:
a(n)=a(1)*r^(n-1)
and we have a(1)=2 , r=3    
Explicit rule: a(n)=2*(3)^(n-1)
hope this helps
 
        
             
        
        
        
Since 1 km is 100,000 cm there are 39,400 inches in a kilometer
        
                    
             
        
        
        
Answer:
3.5km
Step-by-step explanation:
not sure but this is how I'll do it tho
distance= 7 x 1/2 = 3.5 (km)
 
        
             
        
        
        
Can u make a graaph showing this
        
             
        
        
        
Answer:
11f+12
Step-by-step explanation:
Because the fs go together and so do the normal answers.