Final answer:
The unit rate for 18 pounds for $9 is $0.50 per pound.
Step-by-step explanation:
The unit rate for 18 pounds for $9 is obtained by dividing the total cost by the number of pounds. In this case, the unit rate can be calculated as follows:
- Divide the total cost by the number of pounds: $9 ÷ 18 = $0.50 per pound.
Therefore, the unit rate for 18 pounds for $9 is $0.50 per pound.