The scale on a map of Roswell, New Mexico is 1 inch : 0.51 mile. If two hills in Roswell are 7 inches apart on the map, then how many miles apart are they in real life? Enter your answer as a decimal, without units.
1 inch: 0.51 mile {Scale}, then:
7 inches x 0.51 mile =3.57 miles - distance between hills.