Answer:

Step-by-step explanation:
Try using Symbolab, I use it all the time it gives the correct answer and it gives good explanations (this isn't a sponsor I've just been using it since the 6th grade lol).
Answer:
Chocolate Chips are 1.50 per pound and Walnuts are 3.25 per pound.
You're able to recieve more exact measurements and it helps for keeping your work clean and organzied.
All of 4's value is hundreds, tens, and ones.