Convert the map scale into a unit rate. how many inches represent 1 mile? show your work. interpret the meaning of the unit rate. 3/10 in. = 7/8 mi

We are given that:
3/10 in = 7/8 mi
Use cross multiplication to get the scale as follows:
3/10 in = 7/8 mi
3(8) in = 7(10) mi
24 in = 70 mi
24/70 in = 1 mi
1 mi = 0.3429 in

Therefore:
unit rate of the map is: 1 mi = 0.3429 in

This means that:
each one 1 mile in reality is represented by 0.3429 inches on the map