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 $25 + 1 8% of principal $37 + 1 4% of propa $107+07% of priopal An investor purchases 330 shares at $12 09 a share, holds the stock for 49 weeks, and then sells the stock for $16 63 a share The annual rate is %(Round to five decimal places