Use the commission schedule from Company B shown in the table to find the annual rate of interest earned on the investment. (Note: commissions are rounded to the nearestcent.)

Principal(Value ofStock)	Commission
Under$3,000	$32+1.8% of principal
$3,000 -$10,000	$56+1.% of principal
Over$10,000	$106+0.5% of principal

An investor purchases385 shares at $38.94 a share, holds the stock for 359 days, and hen sells the stock for $47.88 a share. Assume a 360-day year.

The annual rate of interest is % ? %.(Round to three decimalplaces.)