1. This concept explains the difference between sales and variable expense.

A . contribution margin

B . take home margin

C. revenue figures

D . net unaffected income

2. The point of zero profit is known as

A . demise

B . break-even point

C. struggle

D . bankruptcy

3. A cost that does not change is a

A . fixed cost

B . set in changing stone

C . interchanging

D . variable

Is the first time that I put 3 question, Its my only one left question in course hero, please if you could help me about these one it will be really helpful!