Bill deposits money into a bank account at the end of each year. Bill's deposit in yeart is equal to 250t. The bank credits interest at an annual effective rate of i. The amount of interest earned in Bill's account during year 9 is equal to 1250. Calculate i. [4.h-i #15] O 12.87% 10.72% 11.26% 0 12.33% O 11.8%