Country A has a population of about 7,200,000. Country B has a population of about 3.6 x 106.

Part A
Which expression is equivalent to 7,200,000?

720 x 106

72 x 104

7.2 x 106

7.2 x 105

Part B
How many times larger is Country A's population than Country B's population?

200

20

2

0.2