Financial managment

1)     Dupree Funds is considering the fees charged by two banks. First America charges a flat rate of $0.11 per payment and First Western requires a balance of $500,000 (that does not pay interest to Dupree foods), plus $.05 per payment. What is the number of payments per year where the costs of the two banks will be equal? Assume Dupree's cost of funds is 9%. 

2)     What is the annual tax shield to a firm that has total assets of $80 million and a net worth of $55 million, if the average interest rate on debt is 8.5% and the marginal tax rate is 35%?