Calculating credit card finance charge. Blake Miller recently received his monthly MasterCard bill for the period June 1–30, 2021, and wants to verify the monthly finance charge calculation, which is assessed at a rate of 15 percent per year and based on ADBs, including new purchases. His outstanding balance, purchases, and payments are as follows:

What are his ADB and finance charges for the period?

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Previous Balance: $386 Purchases: June 4 June 12 June 20 June 26 $137 78 98 75 Payments: June 21 $35