If a storm window has an area of 640 square inches, what is the equation to find the dimensions when the window is 20 inches higher than it is wide (x represents height)?

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