Please Help. I'll give you a lot of points! Use the formula in the picture to determine the regular payment amount, rounded to the nearest dollar. The price of a small cabin is $45,000. The bank requires a 5% down payment. The buyer is offered two mortgage options: 20-year-old fixed at 9% or 30-year fixed at 9%. Calculate the amount of interest paid for each option. How much does the buyer save in interest with the 20-year option?