1. **State the problem:** We need to find the unit price per padlock when a pack of 7 padlocks costs 23.80 dollars. 2. **Formula used:** The unit price is calculated by dividing the total cost by the number of items: $$\text{Unit Price} = \frac{\text{Total Cost}}{\text{Number of Padlocks}}$$ 3. **Apply the values:** $$\text{Unit Price} = \frac{23.80}{7}$$ 4. **Perform the division:** $$\text{Unit Price} = 3.4\cancel{0} \approx 3.40$$ 5. **Round to the nearest cent:** The result is already at two decimal places, so the unit price per padlock is 3.40 dollars. **Final answer:** The unit price per padlock is **3.40** dollars.