Janiya is taking a road trip. The distance she plans to travel can be written as 3×10^2 kilometers, 3×10^5 meters, 3×10^7 centimeters, or 3×10^8 millimeters. Which distance uses the most appropriate units?
A. 3 x 10^8
B. 3 x 10^2
C. 3 x 10^7
D. 3 x 10^5
The most appropriate units for Janiya's road trip would be kilometers. Therefore, the correct distance is 3 x 10^2 kilometers.
Therefore, the answer is B. 3 x 10^2.