Use the commission schedule from Company B shown in the table to find the annual rate of interest earned on the investment. (Note: commisions are rounded to the nearest cent.) Principal (Value of Stock) Under $3,000 $3,000 - $10,000 Over $10.000 Commission $32 +1.8% of principal $56 + 1.% of principal $106 +0.5% of principal An investor purchases 488 shares at $38.02 a share, holds the stock for 334 days, and then sells the stock for $52.66 a share. Assume a 360-day year. The annual rate of interest is %. (Round to three decimal places.) Many tax preparation firms offer their clients a refund anticipation loan (RAL). For a fee, the firm will give a client his refund when the return is filed. The loan is repaid when the Internal Revenue Service sends the refund directly to the firm. Thus, the RAL fee is equivalent to the interest charge for a loan. The schedule in the table on the right is from a major RAL lender. Use this schedule to find the annual rate of interest for a $4,555 RAL, which is paid back in 38 days. RAL Amount $0 - $500 $501 - $1,000 $1,000 - $1,500 $1,501 - $2,000 $2,001 - $5,000 RAL Fee $29.00 $39.00 $49.00 $69.00 $89.00 (Assume a 360-day year.) What is the annual rate of interest for this loan? % (Round to three decimal places.)