Blair had these daily balances on his credit card for his last billing period. He did not

Question:

Blair had these daily balances on his credit card for his last billing period. He did not pay the card in full the previous month, so he will have to pay a finance charge. The APR is 18.6%.
2 days @ $331.98
11 days @ $1,203.04
4 days @ $996.71
13 days @ $1,002.76
a. What is the average daily balance? Round to the nearest cent.
b. What is the finance charge?

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