To find the unit rate of muffins per cup of almonds, you need to divide the total number of muffins by the total number of cups of almonds used.
Manny makes 36 muffins and uses 4 cups of almonds.
The calculation will be:
\[ \text{Unit rate} = \frac{\text{Total muffins}}{\text{Total cups of almonds}} = \frac{36 \text{ muffins}}{4 \text{ cups}} = 9 \text{ muffins per cup} \]
So, the unit rate is 9 muffins per cup of almonds.