On a city map drawn on a coordinate plane, the city park is located at (4, 9) and the school is at (20, 9). what is the distance between the park and the school in the map units?

The distance between the two is 16.

This is because we know that they y coordinates are the same, so then all we need to know is the difference between the two x coordinates. In this case, all we have to do is subtract 4 from 20.

Hope that this helped.