If katie paid tasha $0.01 on the first day of a 31 day month and doubled the amount everyday throughout the month, how much money would tasha receive from katie on the last day of the month?

use the formula 2n-1 (0.01) (where n=number of days)

a)
$21,474,836.48

b)
$10,737,418.24

c)
$655.36

d)
$5,368,709.12