Answer:
![1\ in.:12\ ft.](https://img.qammunity.org/2019/formulas/mathematics/college/c8y6ufrp0uz82z0j7gjp5y3t4x9jurstgo.png)
Explanation:
Given: The length of the building in her map = 6 inches.
The actual length of the building = 72 feet.
We know that the scale of the map is given by the ratio of side length of the image on map and the side length of the actual image.
Now, the scale of Jackie's map is given by :-
![\frac{\text{Side length of image on map}}{\text{Side length of actual image}}\\\\=(6\ in.)/(72\ ft.)=(1\ in.)/(12\ ft.)](https://img.qammunity.org/2019/formulas/mathematics/college/25omlvqsnlzuoulde3zm473qfzceud01eb.png)
Hence, the scale of Jackie’s Map =
![1\ in.:12\ ft.](https://img.qammunity.org/2019/formulas/mathematics/college/c8y6ufrp0uz82z0j7gjp5y3t4x9jurstgo.png)