Janiya is taking a road trip. The distance she plans to travel can be written as 3×102

Question

kilometers, 3×105
meters, 3×107
centimeters, or 3×108
millimeters. Which distance uses the most appropriate units?(1 point)
Responses

3×105
meters
3 times 10 to the 5th power meters

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

3×102
kilometers
3 times 10 squared kilometers

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

Answer 1

To determine which distance uses the most appropriate units, we need to consider the typical scale of a road trip.

1. 3 × 10² kilometers = 300 kilometers
2. 3 × 10⁵ meters = 300,000 meters
3. 3 × 10⁷ centimeters = 30,000,000 centimeters
4. 3 × 10⁸ millimeters = 300,000,000 millimeters

Typically, road trip distances are measured in kilometers or miles, as they are more practical for longer distances.

Based on this, the most appropriate unit for a road trip distance is 3 × 10² kilometers (300 kilometers).

Hence, the most appropriate choice is:

3 × 10² kilometers (3 times 10 squared kilometers).