3. You are purchasing a house for $400,000. You plan to make a down payment of $80,000 and finance the rest with a mortgage. You must choose between two 30 -year loan packages, both with annual mortgage payments (not monthly): Package #1 has an annual interest rate of 4.5% and requires you to pay two "points" ($6400). Package \#2 has an annual interest rate of 4.75% but no "points". Calculate the annual payment (PMT), show the annual payments over the 30 -year period; then use SUM to calculate the total payments and calculate the IRR (to 2 decimal places) of each loan package. Identify which loan is a better deal for you and why