In 1990, the population of India was about 870.5 million people. By 1995, there were about 960.9 million people. The equation approximates the number of people, in millions, in terms of t the number of years since 1990.



By what factor does the number of people grow in one year?

If d is time in decades, write an equation expressing the number of people, p, in terms of decades, d, since 1990.

Use the model to predict the number of people in India in 2015.

The 2015, the population of India was 1,311 million. How does this compare with the predicted number?