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

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

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

Answer 1

To determine the most appropriate units for Janiya's road trip distance, we should consider the magnitude of the distance in relation to the unit being used.

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

Given that road trip distances are usually measured in kilometers or miles, the most appropriate unit in this context is:

3 × 10² kilometers (300 kilometers)

So, the best choice is 3 × 10² kilometers.