Brian and Jean-Mikael are thinking about opening a hot dog stand on Saturdays, but before proceeding they decide to do some Cost-Volume-Profit analysis. They assume they can sell hot dogs for $5.00 each. The food cost per hot dog to is $2.00. They can set-up a stand and borrow the equipment to make the hot dogs for free, but feel they need to spend $60 per week to advertise. Given these assumptions, how many hot dogs do they need to sell to: 13) Break-even? 14) Make a weekly profit of $90