Money that is collecting interest in a bank account doubles in value every 20 years.
When the account was opened, it contained 64 dollars, or 26 dollars. In 40
years, the account balance has doubled 2 times, increasing by a factor of 22.
It now has a balance of 26 - 22. Expressed as a power, how much money, in
dollars, is in the account now?
A. 212
O B. 28
C. 48
O D. 412