The population of China is approximately 1.381 × 10^9, and the population of the United States is approximately 3.23 × 10^8. About how many people live in both countries combined? Express your answer in scientific notation.

Answer:The population of China: 1.381 × 10^9=13.81 × 10^8The population of the United States: 3.23 × 10^8Total: 13.81 × 10^8 + 3.23 × 10^8 = (13.81 + 3.23) × 10^8 = 17.04 × 10^8 = 1.704 × 10^9Step-by-step explanation: