Model	Weight	Price
Fierro 7B	17.9	2200
HX 5000	16.2	6350
Durbin Ultralight	15.0	8470
Schmidt	16.0	6300
WSilton Advanced	17.3	4100
bicyclette vlo	13.2	8700
Supremo Team	16.3	6100
XTC Racer	17.2	2680
DOnofrio Pro	17.7	3500
Americana #6	14.2	8100

a.) Develop an estimated regression equation that could be used to estimate the price for a bicycle, given its weight. How much of the variation in the prices of the bicycles in the sample does the regression model you estimated NOT explain? Integer only with Excel, without % sign.

b.) Use the regression model you estimated to predict the price of an 18-pound bicycle. Integer only with Excel, without $ sign.