Teddy Dog Food Incorporated (TDFI) currently makes and sells one type and size of dog food, a 16 ounce bag of all-natural freeze-dried chicken. TDFI sells each bag of food for $10. The Variable Expense per bag of food is $6. Fixed Expenses per month total $300. What is the Unit CM (Contribution Margin per unit) of each bag of dog food that is sold? Omit the dollar sign in your answer Type your answer...