Problem 3 Show all supporting work for the following calculations Calculate cost of financing over the life of a $3,000,000, 6%, 20 year bonds issued at par Calculate cost of financing over the life of a $4,000,000, 7%, 15year bonds issued at par How much total interest will be paid on a $12,000, 7%, 120 day note? How much total interest will be paid on $18,000, 10%, 60 day note?