Answer:
470,000,000 or 4.7 * 10^8.
Explanation:
4 * 10^8 = 400,000,000
add: 70,000,000
= 470,000,000
4.7 x 10^8
70,000,000 is 7.0x10^7
4x10^8 can also be written as 40x10^7
7.0x10^7
40x10^7
47x10^7 or 4.7 x 10^8
3.4m questions
4.4m answers