SOLUTION: A bike rental company rented out 6 bikes in its first month. The number of bikes it rented each month increased by three times the previous month’s rentals. What was the tota

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Question 912594: A bike rental company rented out 6 bikes in its first month.
The number of bikes it rented each month increased by three times the previous month’s rentals.
What was the total number of bikes the company rented out for the first 6 months?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
Geometric: r = 3
sum%28+a%5BI%5D%2C+i=1%2C+6%29 = a(1-r^n)/(1-r)= 6(1-3^6)/(-2) = 2184