Question 30 Not yet answered Marked out of 1 p Flag question Approximately what percentage of research and development spending by businesses in the United States in 2016 went to development (innovation and imitation) and about what percentage went to basic and applied research and invention, respectively? Select one: O a. 20, 80 O b. 40, 60 O c. 80, 20 O d. 60, 40 Clear my choiceQuestion 5 Not yet answered Marked out of 1 \\ Flag question Defined narrowly as wages and salaries, labor's share of the national income is about Select one: O a. 71 percent. O b. 53 percent. O c. 42 percent. O d. 89 percent. Clear my choiceQuestion 14 Not yet answered Marked out of 1 p Flag question In which of the following market models do demand and marginal revenue diverge? Select one: O a. pure monopoly, oligopoly, and monopolistic competition O b. pure monopoly, oligopoly, and pure competition O c. pure monopoly only O d. oligopoly only Clear my choice