Essentially this is asking you to sum the first three values of the geometric series that starts with i being 1 and has the rule of ( ).
). 
Since we must sum the first <em>three </em>geometric values we need to see what the value of i will be for the first three. The sigma notation shows us that the first i will be equal to 1. This means the second i is 2 and the third i is 3. 
Knowing this you can plug in the corresponding i values into ( ) and sum it all together
) and sum it all together
( ) + (
) + ( ) + (
) + ( )
)
( ) + (
) + ( ) + (
) + ( )
)
( ) + (
) + ( ) + (
) + ( )
)
(8) + (2) + ( )
)
10 + 
 
 
10.5
Hope this helped!
~Just a girl in love with Shawn Mendes
 
        
             
        
        
        
2x-9y and 11x + 3y - 12y - 9x
        
                    
             
        
        
        
Answer:
y (is less than or equal to) 3
Step-by-step explanation:
i hope this helps :)
 
        
                    
             
        
        
        
Answer:
answer a
Step-by-step explanation:
 
        
             
        
        
        
At break-even C = R so we have:-
20n + 134,000 = 160n
140n = 134,000
answer = 134,000 / 140  =  957