The owner of a bakery decides to drop the price of lemon cakes by 5%, how much does quantity sold have to rise to stop the revenue from decreasing

Robert must always have cream in his coffee. For Robert, the cross price elasticity of demand for coffee and cream is

A) equal to 0. B) negative. C) positive. D) impossible to determine without more information.

Which of the following is an example of a firm's derived demand?

a. The wage that a worker earns is a function of her human capital. b. A firm's demand for college textbook study guide authors is inseparably linked to the supply of college textbooks. c. Factors that increase the demand for labor will increase the equilibrium wage. d. All of the above are correct.