2. Brittany is hired by the Amazon. But, at the first day for working, she receives the following question. If the sales of the Amazon grow at 5% per year, how long before the sales double?

So, she remembers the way she learned from Dr. Lee in the class, Principles of Finance. By using the financial calculator, what is her calculation answer?

a. 15 years b. 14.21 years c. 5.5 years d. 13.75 years e. 7.35 years