5. Suppose that Ken spends 4 hours playing golf, paying green fees of $50, rather than working at his job that pays $10 hour. What is the economic cost of his decision to play golf? A) b) c) d) e) $90 $60 $50 $40 nothing, since he enjoys golf much more than working anyway. 6. Which of the graphs below shows Y increasing at a decreasing rate? 8. Which of the following issues is related to microeconomics rather than macroeconomics?