In 1990, the rate of change of the world population was approximately 0.09125 billion per year (or approximately 1 million people every four days). The world population was estimated to be 5.3 billion in 1990.Use the linear model to predict the world population in 2025.

From 1990 to 2025 is 35 years. At a rate of 0.09125 billion people per year, the population increases by 35 × 0.09125 = 3.19375 billion. Adding that to 5.3 billion gives 8.49375 billion, or 8,493,750,000 people, which matches choice B.

AI-written and checked against the verified answer.