Mathematics, 12.12.2019 22:31 graciewilson

Trina has a credit card that uses the adjusted balance method. for the first 10 days of one of her 30-day billing cycles, her balance was $780. she then made a purchase for $170, so her balance jumped to $950, and it remained that amount for the next 10 days. trina then made a payment of $210, so her balance for the last 10 days of the billing cycle was $740. if her credit cards apr is 17%, which of these expressions could be used to calculate the amount trina was charged in interest for her billing cycle?

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Trina has a credit card that uses the adjusted balance method. for the first 10 days of one of her 3...