Lindsey is using a map to find the distance between her house and juanita’s house. on the map, the distance is 2.5 in. if the map scale is 1/8 in. : 1.5 mi, how far from juanita does lindsey live?

I like using decimals instead of fractions.
1/8: 0.125
So the scale is:
0.125 in: 1.5 mi
What you do to one side you have to do to the other side. We have the map distance, which is 2.5. Let's see what it was multiplied by to find the map distance of their houses.
2.5÷ 0.125= 20
Let's multiply the other side by 20.
20×1.5
30
So, Juanita and Lindsey live 30 minutes away.