1. **State the problem:** Clarke ran 2.8 miles on Sunday, 2 miles on Monday, and 3.7 miles on Tuesday. We need to find the total distance Clarke covered. 2. **Formula used:** To find the total distance, we add the distances run each day: $$\text{Total distance} = \text{Sunday} + \text{Monday} + \text{Tuesday}$$ 3. **Substitute the values:** $$\text{Total distance} = 2.8 + 2 + 3.7$$ 4. **Add the numbers:** $$2.8 + 2 = 4.8$$ $$4.8 + 3.7 = 8.5$$ 5. **Final answer:** Clarke covered a total of **8.5 miles**.