Response to the following questions:
1. What is the contribution margin, and why is it important for managers to know the contribution margins of their products?
2. How much will profits increase for every unit sold over the break-even point?
3. What is the major advantage of using C-V-P graphs?
4. When other factors are constant, what is the effect on profits of an increase in fixed costs? Of a decrease in variable costs?
5. What effect is a change in the sales mix likely to have on a firm's overall contribution margin ratio?