1. Actual sales=600 ; break even sales =400 ; contribution margin= 100. Find the margin of safety in dollars.
2. If Net Present Value is zero, do we accept or reject a project?
3. Present value = 60 ; cost= 58. Find the net present value
4. A graph which does NOT start at the origin slopes upward to the right. Does this represent variable costs, mixed costs or fixed costs?