Question

Here are the approximate populations of three countries, expressed in scientific notation: Albania: 3 × 10 6 ; Poland: 3.8 × 10 7 ; South Korea: 5 × 10 7.

Decide what power of 10 to put on the label for the rightmost tick mark of this number line so that all three countries’ populations can be distinguished.

Answer 1

To distinguish the populations of the three countries, use the power of 10 in South Korea's population as the label for the rightmost tick mark on the number line.

To distinguish the populations of the three countries, we need to find the power of 10 that can be used as the label for the rightmost tick mark on the number line. We can do this by determining the largest population among the three countries and using the corresponding power of 10.

Among Albania, Poland, and South Korea, the population of South Korea (5 × 107) is the largest. Therefore, we can use the power of 10 in South Korea's population as the label for the rightmost tick mark on the number line.

The power of 10 in South Korea's population is 7. So, the label for the rightmost tick mark on the number line should be 107.