To find the unit rate of muffins per cup of almonds, you can divide the total number of muffins by the total number of cups of almonds used.
Muffins = 36
Cups of almonds = 4
Unit rate = Muffins / Cups of almonds = 36 muffins / 4 cups = 9 muffins per cup.
The correct response is 9 muffins.