Lizzie's budget line is shown in the figure above. The relative price of a magazine is ________ per magazine

Following adjustments to a new equilibrium in a market, the market clearing price remains unchanged, but the equilibrium quantity is now lower. Which of the following could definitely have caused this outcome?

A) Demand and supply both increased. B) Demand and supply both decreased. C) Demand increased, and supply decreased. D) Demand decreased, and supply increased.

Which of the following statements is correct?

a. A general sales tax on food is regressive when low-income taxpayers spend a larger proportion of their income on food than high-income taxpayers. b. A general sales tax on food is regressive when middle income taxpayers spend a smaller proportion of their income on food than high-income taxpayers. c. A general sales tax on food is regressive when high-income taxpayers spend a larger proportion of their income on food than middle income taxpayers. d. A general sales tax on food is regressive when high-income taxpayers spend a larger proportion of their income on food than low-income taxpayers.