Question

Janiya is taking a road trip. The distance she plans to travel can be written as 3×102
3
×
10
2
kilometers, 3×105
3
×
10
5
meters, 3×107
3
×
10
7
centimeters, or 3×108
3
×
10
8
millimeters. Which distance uses the most appropriate units?(1 point)
Responses

3×107
3
×
10
7
centimeters
3 times 10 to the 7th power centimeters

3×102
3
×
10
2
kilometers
3 times 10 squared kilometers

3×108
3
×
10
8
millimeters
3 times 10 to the 8th power millimeters

3×105
3
×
10
5
meters

Answer 1

To determine the most appropriate unit for Janiya's road trip distance, we should consider the magnitude of the distance and the typical units used for measuring road trip distances.

- 3 × 10^2 kilometers = 300 kilometers
- 3 × 10^5 meters = 300,000 meters
- 3 × 10^7 centimeters = 30,000,000 centimeters
- 3 × 10^8 millimeters = 300,000,000 millimeters

Among these options, the most appropriate unit for measuring a road trip distance is kilometers, since distances for road trips are typically expressed in kilometers rather than meters, centimeters, or millimeters due to the convenience and practicality of the unit.

Therefore, the best choice is:

**3 × 10^2 kilometers** (3 times 10 squared kilometers).