Final answer:
The bag contains 5 pounds of cashews.
Step-by-step explanation:
To find the number of pounds of cashews in the bag, we need to solve the equation p = 2.59c + 1.72(8 - c) where p is the price of the bag and c is the number of pounds of cashews in the bag. We are given that the price of the bag is $18.11.
So, we have 18.11 = 2.59c + 1.72(8 - c).
Simplifying the equation and solving for c:
18.11 = 2.59c + 13.76 - 1.72c
4.35 = 0.87c
c = 4.35/0.87
c = 5 pounds
Therefore, the bag contains 5 pounds of cashews.