Calculate the monthly finance charge for the credit card transaction. Assume that it takes 10 days for a payment to be received and recorded, and that the month is 30 days long. Round to nearest cent.
$300 balance, 17%, $50 payment

a. what is the previous balance method? I keep coming up with $4.25 but that cant be right.

b. what is the adjusted balance method? I keep coming up with $35.42 but that cant be right.

c. what is the average daily balance method? I keep coming up with $3.28, is that right?

I will give medals, I really need help with this please...

Question

Calculate the monthly finance charge for the credit card transaction. Assume that it takes 10 days for a payment to be received and recorded, and that the month is 30 days long. Round to nearest cent. 
$300 balance, 17%, $50 payment 

a. what is the previous balance method? I keep coming up with $4.25 but that cant be right.  

b. what is the adjusted balance method? I keep coming up with $35.42 but that cant be right.  

c. what is the average daily balance method? I keep coming up with $3.28, is that right?

I will give medals, I really need help with this please...