1. a car traveling 100 miles in 2 hours has a unit rate of miles per hour. 25 50 200 2. when finding a unit rate we the given values. multiply divide 3. a tree that grows 3 feet every 5 years is growing at a rate of feet per year. 0.6 15 601. a car traveling 100 miles in 2 hours has a unit rate of miles per hour. 25 50 200 2. when finding a unit rate we the given values. multiply divide 3. a tree that grows 3 feet every 5 years is growing at a rate of feet per year. 0.6 15 60