Q. Jane is willing to pay $4 for the first cup of coffee a day, $2.50 for the second cup, and $1 for the third cup, after which she won't buy any coffee. The price of a cup of coffee is $2.40. How many cups of coffee per day will Jane buy?
Q. The effect of trade sanctions imposed on Iraq limiting Iraq's production of oil after the 1990 Gulf War on the oil market is best shown graphically with a price ceiling below equilibrium price.