Final answer:
Victor rode his skateboard for 18 miles, which is equal to 30 kilometers when converting miles to kilometers using the conversion factor of 1 kilometer being approximately 0.6 miles.
Step-by-step explanation:
Last week, Victor rode his skateboard for 18 miles. To find out how many kilometers Victor skateboarded last week, we need to convert the given distance from miles to kilometers. We are given that one kilometer is approximately equal to 0.6 miles. So, to convert 18 miles to kilometers, we can multiply 18 by the conversion factor (0.6).
To convert miles to kilometers, knowing that 1 kilometer is approximately equal to 0.6 miles, we can divide the total miles by the conversion factor. Therefore, the calculation to determine how many kilometers Victor skateboarded is 18 miles divided by 0.6, which equals 30 kilometers.
Answer: C) 30 kilometers.