Answer: Based on the information provided, Arturo can purchase the following combinations of walnuts and almonds:
1. 4 pounds of almonds and no walnuts:
- Cost of almonds: 4 pounds * $2/pound = $8
- Total cost: $8
2. 3 pounds of almonds and 2 pounds of walnuts:
- Cost of almonds: 3 pounds * $2/pound = $6
- Cost of walnuts: 2 pounds * $4/pound = $8
- Total cost: $6 + $8 = $14
3. 2 pounds of almonds and 4 pounds of walnuts:
- Cost of almonds: 2 pounds * $2/pound = $4
- Cost of walnuts: 4 pounds * $4/pound = $16
- Total cost: $4 + $16 = $20 (This combination exceeds Arturo's budget, so he cannot purchase this option)
Therefore, Arturo can purchase 4 pounds of almonds with no walnuts, or 3 pounds of almonds with 2 pounds of walnuts.
Explanation: Hope this helps and good luck!