Which of the following conversion factors would you use to change 18 kilometers to meters?
a.) 1,000 m/1 km
b.) 1 km/1,000 m
c.) 100 m/1 km
d.) 1 km/100 m

The answer is A) 1,000 meters = 1 Kilometer.                                                        

Explanation:

To convert 18 Kilometers into meters, one would have to  multiply the figure given in Kilometer by 1000.

Therefore we have 18 x 1000

= 18,000.

So 18 Kilometers is also 18,000 meters when converted.

Cheers!

the answer is c i did the same question so i know that's right!