Elizabeth went on a fabulous vacation in May and racked up a lot of charges on her credit card. When it came time to pay her June credit card bill, she left a balance of

$1280.00.

Elizabeth's credit card billing cycle runs from the 19th of each month to the 18th of the next month, and her interest rate is

17.5%.

She started the billing cycle June 19-July 18 with a previous balance of

$1280.00.

In addition she made three purchases, with the dates and amounts shown in the table to the right. On July 15 she made an online payment of

$520.00

that was credited to her balance the same day. Complete parts a through

c.

Date	Amount of purchase/payment
6/21	$182.52
6/30	$50.00
7/5	$91.13
7/15	Payment $520.00

a. Find the average daily balance on the credit card account for the billing cycle June 19-July 18.

The average daily balance for the billing cycle is

$

b. Compute the interest charged for the billing cycle June 19-July 18.

The interest to be paid on July 19 is

$

c. Find the balance on the account at the end of the June 19-July 18 billing cycle.

The new balance on July 19 is

$