4. The following data give the approximate population of China for selected years from 1900 until 2010: Year 1950 1970 1980 1900 Population 400 (millions) 1990 2000 2010 1135 1266 1370 557 825 981 Assume that the population growth can be modeled with an exponential function p- bem , where x is the year and p is the population in millions. Write the equation in a linear form (Section 6.3), and use linear least-squares regression to determine the constants b and m for which the function best fits the data. Use the equation to estimate the population in the year 1985.

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