Can someone please help me??

Answer:
4.7*10^5 would be least, 5.2*10^5 would be the middle child, and 3.9*10^8 would be the most.
Explanation:
The trick in this question is that at first glance 3.9*10^8 is the smallest, though it is actually several digits larger than the rest.
Answer:
1. 4.7 x 10 exponent 5
2. 5.2 x 10 exponent 5
3. 3.9 x 10 exponent 8
Step-by-step explanation: