In 2011, home prices and mortgage rates fell so far that in a number of cities the monthly cost of owning a home was less expensive than renting. The following data show the average asking rent for 10 markets and the monthly mortgage on the median priced home (including taxes and insurance) for 10 cites where the average monthly mortgage payment was less than the average asking rent ( The Wall Street Journal, November 26-27, 2011).

City	Rent ($)	Mortgage ($)
Atlanta	840	539
Chicago	1,062	1,002
Detroit	823	626
Jacksonville	779	711
Las Vegas	796	655
Miami	1,071	977
Minneapolis	953	776
Orlando	851	695
Phoenix	762	651
St. Louis	723	654

c. Using a quadratic regression model, develop an estimated regression equation to predict the monthly mortgage on the median-priced home, given the average asking rent.