Answer:
The answer is: D. 6.9 x 10^5
Explanation:
To find the answer, you simply need to convert the scientific notation into normal notation and then divide the largest value by the smallest value.
Scientific Notation Normal Notation
3.45 E 9 3,450,000,000
0.5 E 4 5000
Divide these values and you get:
690,000
or
6.9 E 5