Antonio's MasterCard has a billing cycle that runs from the ${15}^{th}$ of each month to the ${14}^{th}$ of the next month. The APR

for the card is $19\mathrm{.}4\%.$ The following table shows his transactions for the period between April ${15}^{th}$ and May ${14}^{th}$ :

Complete the following table, and then follow the steps towards finding the finance charge and total balance after

interest is added. Show all work.

Calculate the average daily balance:

Calculate the periodic interest rate.

Calculate the finance charge $($interest to be added at the end of the month$).$

Calculate the balance on Antonio's credit card bill on May ${15}^{th},$ the start of the next billing cycle.