Use the commission schedule from Company A shown in the table to find the annual rate of interest earned on the investment. (Note: commissions are rounded to the nearest cent.) Principal (Value of Stock) Under $3,000 $3,000 to $10,000 Over $10,000 Commission $25 +1.8% of principal $37 +1.4% of principal $107 +0.7% of principal An investor purchases 361 shares at $11.11 a share, holds the stock for 49 weeks, and then sells the stock for $19.89 a share. The annual rate is % (Round to five decimal places.)