please show all work without excel

9. (10 pts)Find the monthly mortgage payment for a house purchased at $300000 with down payment of $40,000 at an annual effective rate of 3.95% with a thirty-year mortgage. a) What is the interest rate at the end of the thirty year? b) Find the monthly payment for the mortgage. 9. (10 pts)Find the monthly mortgage payment for a house purchased at $300000 with down payment of $40,000 at an annual effective rate of 3.95% with a thirty-year mortgage. a) What is the interest rate at the end of the thirty year? b) Find the monthly payment for the mortgage