Q1:

If tomatoes are inferior goods, which of the following will increase the demand for potation? A. increase in the price of a complement B. Decrease in income C. Decrease in the price of a substitute D. increase in income

Q2:

The marginal cost of printing a typical hardcover novel $12 while the same book in paperback has a marginal cost of $10 (when it is released, several months later). So why do publishers charge an average of $15 more (instead of $2 more) for hardcover books?