Laura’s credit card has an apr of 12.04%, and it computes finance charges using the daily balance method and a 30-day billing cycle. on june 1st, laura had a balance of $606.40. she made exactly one transaction in june: a payment of $55.25. if laura’s finance charge for june was $5.71, on which day did she make the payment?

At the county fair, animals are judged for the quality of their breeding and health. the animal pens are arranged in an array, with one animal in each pen. a barn can hold at most 10 rows of pens and at most 6 pens in each row, with room for people to walk around them. what different ways can the planners of the county fair arrange the pens for the horses and cows in the same barn?