One model of Earth's population growth is , P(t)=64/(1+11e^-.08t) where t is measured in years since 1990, and P is measured in billions of people. Which of the following statements are true?
A.The population of Earth is increasing by a steady rate of 8% per year.
B. In 1990, there were 5.33 billion people.
C.The carrying capacity of Earth is 64 billion people.
D.The population of Earth will grow exponentially without bound.

Question

One model of Earth's population growth is , P(t)=64/(1+11e^-.08t) where t is measured in years since 1990, and P is measured in billions of people. Which of the following statements are true?
A.The population of Earth is increasing by a steady rate of 8% per year.
B. In 1990, there were 5.33 billion people.
C.The carrying capacity of Earth is 64 billion people.
 D.The population of Earth will grow exponentially without bound.