What are the formula's I use to find the answer for each question below?

1) Use the unpaid balance method to find the finance charge on the credit card account for August. The starting balance from the previous month is $240. The transactions on the account for the month are given in the table to the right. Assume an annual interest rate of 25% on the account and that the billing date is August 1st.

The finance charge for the month of August is $_?

2) Use the average daily balance method to compute the finance charge on the credit card account for the previous month. The starting balance and transactions on the account for the month of June are given to the right. Assume an annual interest rate of18%.

Month: June (30 days); previous month's balance: $570

June 13	Made payment of $355
June 15	Charged $30 for gasoline
June 20	Charged $162 for skis
June 29	Made payment of $140

3)

Use the average daily balance method to compute the finance charge on the credit card account for the previous month. The starting balance and transactions on the account for the month of April are given to the right. Assume an annual interest rate of18%.

Month: April (30 days); previous month's balance: $370

April 14	Charged $89 for a coat
April 17	Made payment of $140
April 22	Charged $156 for DVDs
April 29	Charged $25 for groceries

4) Use the average daily balance method to compute the finance charge on the credit card account for the previous month. The starting balance and transactions on the account for the month of April are given below. Assume an annual interest rate of 18%.

Month: April (30 days); previous month's balance: $320

April 8	Charged $43 for a coat
April 11	Made payment of $70
April 18	Charged $167 for DVDs
April 26	Charged $49 for groceries

5) Use the average daily balance method to compute the finance charge on the credit card account for the month of August (31 days). The starting balance from the previous month is $220. The transactions on the account for the month are given in the table to the right. Assume an annual interest rate of 25% on the account and that the billing date is August 1st.

The finance charge for the month of August is $_?

6) Use the average daily balance method to compute the finance charge on the credit card account for the month of August (31 days). The starting balance from the previous month is $280. The transactions on the account for the month are given in the table to the right. Assume an annual interest rate of 23% on the account and that the billing date is August 1st.

The finance charge for the month of August is $_?

Transaction Date August 6 Made payment of $92 August 11 Charged $125 for hiking boots August 14 Charged $15 for gasoline August 29 Charged $25 for restaurant meal Transaction Date August 5 Made payment of $76 August 12 Charged $125 for hiking boots August 19 Charged $29 for gasoline August 22 Charged $31 for restaurant meal Transaction Date August 5 Made payment of $80 August 14 Charged $150 for hiking boots August 15 Charged $24 for gasoline August 21 Charged $26 for restaurant meal Transaction Date August 6 Made payment of $92 August 11 Charged $125 for hiking boots August 14 Charged $15 for gasoline August 29 Charged $25 for restaurant meal Transaction Date August 5 Made payment of $76 August 12 Charged $125 for hiking boots August 19 Charged $29 for gasoline August 22 Charged $31 for restaurant meal Transaction Date August 5 Made payment of $80 August 14 Charged $150 for hiking boots August 15 Charged $24 for gasoline August 21 Charged $26 for restaurant meal