I Need only number 5

Your credit card charges 21% interest, compounded monthly. Here is your activity for October, 2018. (It was not a leap year) 4. What is the service charge if your credit card uses ending balance method? a. $5.787 service charge Date Amount Days Balance 300 Start of October Charge Payment Charge Charge 80 300 10/4 10/7 10/20 10/31 10 5. What is the service charge if your credit card uses average daily balance method? Date Amount Days Balance 300 Start of October Charge Payment Charge Charge 10/4 10/7 10/20 10/31 80 300 20 10