x, Number of Years after y. Population The population of a certain country from 1970 through 2007 1969 (millions) is shown in the table to the right. Use your graphing utility's 1 (1970) 194 3 power regression option to obtain a model of the form 11 (1980) 218.2 y = ax that fits the data. How well does the correlation 21 (1990) 235.7 coefficient, r, indicate that the model fits the data? 31 (2000) 290.2 38 (2007) 350 8 Obtain a model of the form y = ax" that fits the data In y (Round to three decimal places as needed )