Sure, here is the answer and how to solve it.
To determine the best buy, we need to calculate the price per notebook for each option.
For the 3-pack, the price per notebook is:
$3.24 ÷ 3 notebooks = $1.08 per notebook
For the 7-pack, the price per notebook is:
$6.93 ÷ 7 notebooks = $0.99 per notebook
Therefore, the 7-pack is the better buy, as it offers a lower price per notebook than the 3-pack.
Hope this helps!
~Ariana :)