Katie had an unpaid balance of $1,734.50 on her credit card statement at the beginning of January. She made a

Katie had an unpaid balance of $1,734.50 on her credit card statement at the beginning of January. She made a payment of $165.00 during the month. If the interest rate on Katie's credit card was 7% per month on the unpaid balance, find the finance charge and the new balance on February 1

$1,734.50 - $165 = $1569.50
$1569.50 x .07 = $109.87 (rounded up)
$1569.50 + $109.87 = $1679.37

$1679.37 is her balance as of February.