For questions 12-13: Use the information below: A model for the world’s population for the years 1900 to 2010 is P(x) = 1.6(1.014)^x billion people x years after 1900. 12. According to the model, at what rate was the population growing during these years? a) 1.7% per year b) 1.4% per year c) 2.7% per year d) 2.4% per year 13. In what year, according to the model, did the world population reach 5 billion? a) 1985 b) 1984 c) 1983 d) 1982

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