ONde side of a retangle is three yards longer than twice the lenght of another side. If the perimeter is 27 yards long, what is the lenght of longer side?

Margaret is purchasing a house for $210,000 with a 15 year fixed rate mortgage at 4.75% interest she has made a 5% down payment the house is valued at 205,000 and the local tax rate is 3.5% homeowners insurance 600 per year what are her total monthly payment