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Part A. Sarah has a credit card with a 21% interest rate and has a current balance of $838. What would her estimated interest be monthly? (Use APR formula or calculator if needed.)

Part B. If Sarah has an estimated monthly interest rate of $15.45 how much money in interest would she pay to the credit card company after one year of only paying the minimum payments?

User Donni
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I uploded the answer to answer.com
User Michael Ros
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