Janiya is taking a road trip. The distance she plans to travel can be written as 3×10^2 kilometers, 3×10^05 meters, 3×10^7 centimeters, or 3×10^8 millimeters. Which distance uses the most appropriate units?(1 point)

Question

Responses

3×10^5
3
×
10
5
meters
3 times 10 to the 5th power meters

3×10^8
3
×
10
8
millimeters
3 times 10 to the 8th power millimeters

3×10^2
3
×
10
2
kilometers
3 times 10 squared kilometers

3×10^7
3
×
10
7
centimeters

Answer 1

To determine which distance uses the most appropriate units, we need to consider the scale of the distance Janiya is planning to travel.

1. 3×10² kilometers: This equals 300 kilometers, which is a reasonable distance for a road trip.
2. 3×10⁵ meters: This equals 300,000 meters, which is equivalent to 300 kilometers. This is also a reasonable distance for a road trip, but meters are generally not used for longer distances like a road trip.
3. 3×10⁷ centimeters: This equals 30,000,000 centimeters, which is equal to 300 kilometers. While correct, centimeters are typically not a practical unit for long distances.
4. 3×10⁸ millimeters: This equals 300,000,000 millimeters, which is also 300 kilometers. Like centimeters, millimeters are not practical for a road trip.

Given that road trips typically cover significant distances best expressed in kilometers, the most appropriate unit for Janiya's trip is:

3×10² kilometers (300 kilometers).

Therefore, that is the best choice for expressing the distance she plans to travel.