One model of Earth's population growth is

, where t is measured in years since 1990, and P is measured in billions of people. Which of the following statements are true?

2 answers

We can see neither your equation nor the "following statements".
The population of Earth will grow exponentially for a while but then start to decrease.
AND
In 1991, there were 5.74 billion people, according to this model.

Your welcome...