6th grade math i mark as brainliest

Which expression calculates the speed in meters per second of an object that travels a distance of 100 m every 20 seconds

Which equation and solution can be used to solve this problem? thirteen less than a number is sixteen. 13-n=16: add 13 to both sides. the answer is 29. n+13=16: subtract 13 from both sides. the answer is 3. n+16=13 subtract 13 from both sides. the answer is 3. n-13=16: add 13 to both sides. the answer is 29.

How far is x from 5 on a number line?