1. **Problem:** Determine which store charges a higher cost per pair of jeans by finding the unit rate (constant of proportionality) for Jenny's Jean Store and Jean Warehouse. 2. **Formula:** The unit rate is found by dividing the total cost by the number of pairs: $$\text{unit rate} = \frac{\text{total cost}}{\text{number of pairs}}$$ 3. **Jenny's Jean Store:** From the graph, at 4 pairs, the total cost is about 80. Calculate the unit rate: $$\frac{80}{4} = 20$$ So, Jenny's Jean Store charges $20 per pair. 4. **Jean Warehouse:** From the table, for example at 2 pairs, the total cost is 36. Calculate the unit rate: $$\frac{36}{2} = 18$$ So, Jean Warehouse charges $18 per pair. 5. **Conclusion:** Since $20 > 18$, Jenny's Jean Store charges the higher rate per pair of jeans.