Question

Part A) Solve one of the four world population problems and explain your process using the following: The growth of the world population can be described by the equation A=A0ert where t is measured in years, A0 is the population of the world at the time t = 0, and r is the annual growth rate, and A is the population at time t. 1) In 1960, the world population was about three billion people and the growth rate was 2.1% per year. At that rate, how long would it have to take for the population to increase to seven billion? 2) At a growth rate of 2.1% per year, how long would it take a population to double? 3) By 2009, the world population was about seven billion, and the growth rate had slowed to 1.3%. At that rate, how long would it take for the population to increase to nine billion? 4) At a growth rate of 1.3% per year, how long would it take a population to double?

Answer 1