Sharron runs her own coffee business. The monthly rent is $500. The contribution margin is $5.00 per coffee. She has recently added individual servings of potatos chips to her product offering. Each bag of potato chips has a contribution margin of $1.00 per bag. She sells 5 bags of potato chips for every 5 coffees. 1. What is Regan' s weighted-average contribution margin per unit? 2. How many total units much Regan sell in a month to earn a target monthly profit of $1,000 ? 3. Of the total units needed to earn $1,000 of profit, how many are hot dogs and how many arecoffees