managirial accounting

Julia Child Company sells baby car seats to retailers for an average of $90 each. The variable cost of each car seat is $51 and monthly fixed selling costs total $8,000. Other monthly fixed costs of the company total $7,500

Required:

7. What is the breakeven point in number of car seats?

8. What is the margin of safety, assuming sales total $38,000?

9. What is the breakeven level in car seats, assuming variable costs increase by 20%?

10. What is the breakeven level in car seats, assuming the selling price goes up by 10%, fixed selling costs decline by 10%, and other fixed costs decline by $1,000?