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Mathematics 4 Online
OpenStudy (anonymous):

Please help/check my work... I need to go to bed! 1. Darla opens a credit card with an APR of 16.43% compounded monthly. How much is charged in interest this month if her balance is $750? 2. Ethan opened a credit card at a department store with an APR of 18.24% compounded quarterly. What is the APY on this credit card? Answer: 4.56 3. Isabel has a previous balance of $872 on a credit card with a 17.8% APR compounded monthly. If she made a payment of $50 this month, what is the new balance on her credit card? Answer: 822.00

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