One model of Earth's population is given by 280 P(E) 4 + 66e-0.021r In this equation, P(t) is the population in billions and t is the number of years after 1980. Round answers to the nearest hundred million people. (a) According to this model, what was Earth's population in the year 1998? | billion people (b) According to this model, what will be Earth's population in the year 2012? ) billion people (c) If t is very large, say greater than 500, then e-0.021t = 0. What does this suggest about the maximum population that Earth can support? O The maximum population the Earth can support is 70 billion people. O The population will grow without bound. O The maximum population the Earth can support is 280 billion people. The maximum population the Earth can support is 35 billion people. O The population will eventually drop to 0.

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