in 2000, the median size of a new single-family house was 2,057 square feet. in 2010, the median size was 2,169 square feet. (source: www.census.gov.) what is the average rate of change in the median home size over this time period? 112 square feet per year 8.9 square feet per year 11.2 square feet per year 89 square feet per year save