Tiberius has a credit card with an APR of 18.6%. On April 30, he had an unpaid credit card balance of $434. During the month of May, he charged $284.50 worth of purchases to the credit card and made a $300 payment toward the card balance. Calculate the interest for the card balance on April 30.
$35.81
$6.73
$67.27
$16.97