19 ) The concept of operating leverage involves the use of ________ to magnify returns at high levels of operation.

A) fixed costs

B) variable costs

C) marginal costs

D) semivariable costs

20 ) Which of the following questions does break-even analysis attempt to address?

A) How much do changes in volume affect costs and profits?

B) At what point does the firm have zero profit?

C) What is the most efficient level of fixed assets to employ?

D) All of the options

21 ) If a firm has fixed costs of $85,000, a variable cost per unit of $10 and sales price per unit of $15, what is the firm's breakeven point in units?

A) 15,000 units

B) 17,000 units

C) 5,667 units

D) 3,400 units