Answer: The correct option is (B)
Step-by-step explanation: Given that Alice had pounds of walnuts at the beginning of the week. At the end of the week, she had pounds.
We are to find the quantity of walnuts that she had used.
We have
The quantity of walnuts that Alice has is
and the quantity of walnut that she had at the end of the week is
Therefore, the quantity of walnut that she has used is given by
Thus, the required quantity of walnut that she has used is
Option (B) is CORRECT.