e cel x Using a Spreadsheet to Calculate Mortgage Payments: What is the monthly payment on a $150,000, 15-year mortgage if the mortgage rate is 5.75 percent? 6.25 percent? 7.5 percent? 9 percent? ( LG 7-4 ) Present Interest The Payment Value Periods Rate ⇒ Will Be $150,000 15  12 5.75%/12 $1,245.62 150,000 15  12 6.25%/12 1,286.13 150,000 15  12 7.50%/12 1,390.52 150,000 15  12 9.00%/12 1,521.40