Part 2: As volume increases within the relevant range, what happens to fixed cost per unit? a. increases proportionally b. remains constant. c. decreases proportionally. d. none of these

Part 3: The salary of the public relations director would likely be a ____________________cost. a. Fixed b. Variable. c. Mixed d. Step

Part 4: The cost of electricity in a bakery shop would likely be a ____________________cost. a. Fixed b. Variable. c. Mixed d. Step