Question

The following graph shows the population growth of the United States over time, which can be modeled by an exponential function.

(inserted image)

The most appropriate unit to measure the time is in (blank)
*drop-down menu*
1. weeks
2. Decades
3. Centuries
4. Days

The most appropriate unit to measure the population is in (blank) of people. *drop-down menu*
1. Millions
2. Hundreds
3. Thousands
4. Billions

Answer 1

1. Decades

2. Millions

Explanation:

1. Almost all the countries in the world do population census once a decade

2. There is no sense in using hundreds or thousands and using billions would mean that the graph would be very small and hence would be hard to read. Millions is the best way