Suppose Janet gives haircuts on Saturdays to make extra money. She is the only person in town cutting hair on Saturdays, so she has some market power. Assume that she does not incur fixed costs and that the only significant variable cost to Janet in giving haircuts is her time. As she gives more haircuts, Janet must increasingly forgo other valuable Saturday activities. For example, if she gives one haircut, she forgoes reading the paper after breakfast. If she gives two haircuts, she gives up reading the paper, sleeping an extra half-hour, and so on.

What does the example of birthdays reveal? a) the speaker is unable to read or count. b) white children and slave children were treated differently. c) children are unhappy when they do not celebrate their birthdays. d) the speaker was abandoned by both of his parents when he was born. what does the example of birthdays reveal? a) the speaker is unable to read or count. b) white children and slave children were treated differently. c) children are unhappy when they do not celebrate their birthdays. d) the speaker was abandoned by both of his parents when he was born.