Answer:
The contribution margin per unit is 0.98$
Step-by-step explanation:
![Sales \: Revenue - Variable \: Cost = Contribution \: Margin](https://img.qammunity.org/2020/formulas/business/college/ny7bqgrltjwfkw12ghhegcumarwjjrezp9.png)
4.25 revenue
1.75 copo paper
1.18 shipping cost
.34 sales commision
3.27 total variable cost
Contribution 4.25 - 3.27 = 0.98
The contribution margin per unit is 0.98$ This is what is left after paying the variable cost.