To find out the best price for sandwich bags, Sean needs to calculate the price per bag. Here, the price per bag can be determined by dividing the total price (which is entered in cell B2) by the number of bags (entered in cell C2). Given the list of formulas:
1. [tex]$=B 2+C 2 / 2$[/tex]
2. [tex]$=B 2 / C 2$[/tex]
3. [tex]$=B 2^{\circ} C 2$[/tex]
4. [tex]$=B 2+C 2$[/tex]
Let's analyze each option:
1. [tex]$=B 2+C 2 / 2$[/tex]
- This formula adds the price (B2) to half the number of bags (C2/2), which does not give the price per bag.
2. [tex]$=B 2 / C 2$[/tex]
- This formula correctly divides the total price (B2) by the number of bags (C2), giving the price per bag.
3. [tex]$=B 2^{\circ} C 2$[/tex]
- This formula uses an unclear operation (which might be interpreted as concatenation or other non-standard operations, depending on context) and does not represent a division operation needed to find the price per bag.
4. [tex]$=B 2+C 2$[/tex]
- This formula adds the total price (B2) to the number of bags (C2), which does not provide the price per bag.
Considering these analyses, the correct formula Sean should use to calculate the price per bag is:
[tex]\[ =B 2 / C 2 \][/tex]
Therefore, the index of the correct formula from the given list is 2.