Jenny used her credit card to buy a refrigerator with a base cost of $824. The refrigerator consumed an average of $0.09 in electricity every day. Jenny made regular monthly payments for three and a half years, at which point the refrigerator was paid off. Over the eight years that Jenny had the refrigerator, it needed repairs three times, costing $68.75 each time. If Jenny's credit card has an APR of 10.54%, compounded monthly, and sales tax in Jenny's area is 7.13%, what was the lifetime cost of Jenny's refrigerator? Assume that Jenny made no other purchases with her credit card, and round all dollar values to the nearest cent. (Remember that leap year occurs every four years.)

Brian bought a new air conditioning unit on his credit card. The unit had a base price of $435. Brian made no other purchases on his credit card. Brian's credit card has an interest rate of 9.4%, compounded monthly, and Brian paid off the balance by making monthly payments for a year and a half. If the sales tax in Brian's area is 8.51%, how much did Brian pay in total?

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