Answer:
8 packs of pencils.
Explanation:
We can make the equation with the given and the unknown. We know she needs 546 pencils and that each pack has 72 pencils inside, so we are missing the amount of packs she should order.
Putting the variable on the 72 because they both pertain to packs of pencils.
This makes the equation 72x = 546
Next you get the 72 by itself, in order to do this you must perform the opposite operation, which would be division. 546/72 is 7.583 however, you cannot order a little more than half a pack, so to at least get 546 pencils, Miss Baker needs to order 8 packs.