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I see you have uploaded an image containing a math problem. Let me extract the text and solve it for you.

### Problem:

The problem reads:
- "Tony paid \$51.75 for a 25-lb bag of dog food. A few weeks later, he paid \$49.99 for an 18-lb bag at a different store.
1. Find the unit price for each bag.
2. Then select which bag is the better buy based on the unit price.

Round your answers to the nearest cent."

### Solution:

1. **Finding the unit price for the 25-lb bag**:
   - Cost: \$51.75
   - Weight: 25 lbs
   \[
   \text{Unit Price} = \frac{51.75}{25} = 2.07 \text{ per pound}
   \]

2. **Finding the unit price for the 18-lb bag**:
   - Cost: \$49.99
   - Weight: 18 lbs
   \[
   \text{Unit Price} = \frac{49.99}{18} \approx 2.78 \text{ per pound}
   \]

3. **Which bag is the better buy?**
   The 25-lb bag is the better buy because the unit price (\$2.07) is lower than the 18-lb bag (\$2.78).

Would you like more details or have any questions on this? 

Here are some related questions:
1. How can I compare prices when given different units?
2. What role does rounding play in unit price calculations?
3. How do I handle currency differences when comparing prices across regions?
4. What are common errors to avoid when calculating unit prices?
5. How do I use unit price comparisons in real-world shopping?

**Tip**: Always compare prices based on the smallest consistent unit to make fair comparisons, such as per pound or per liter.

Tony paid $51.75 for a 25-lb bag of dog food. A few weeks later, he paid $49.99 for an 18-lb bag at a different store. Find the unit price for each bag. Then select which bag is the better buy based on the unit price. Round your answers to the nearest cent.

Learn how to calculate and compare the unit prices of two different dog food bags. This problem involves basic arithmetic concepts and is suitable for students in Grades 5-7. Determine the better buy based on the unit price calculation.

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