When a monopolist sells two units of output its total revenues are $100. When the monopolist sells three units of output, its price per unit is $35. The monopolist's marginal revenue from selling the third unit of output is:

Which of the following is a property of an indifference curve? a. An indifference curve typically slopes downward

b. Two indifference curves always intersect. c. An indifference curve generally follows the principle of less is better. d. The value of utility changes along an indifference curve.

Which of the following is correct?

a. If developing countries limit career and educational opportunities for women, birth rates are likely to be lower. b. Growth rates in developed and developing countries are nearly the same. c. Historically, in periods where the rate of population growth was high, so was the rate of growth in world real GDP per person. d. None of the above is correct.