The numbers going to the left on a number line means the values are smaller and the numbers going to the right means the values are bigger.
Take the value '0' for example, the value on the right of zero is '1', which is a value bigger than zero, and the value to the left of '0' is '-1', which is a value smaller than zero.
Answer:
19.209 miles from each other.
Step-by-step explanation:

Using this we get:



four since it has four edges/sides