l) 2) 3) 4) Assume that the only goods in the economy are oranges and lemons (substitutes). Using the relevant diagrams, illustrate and explain the impact of an increase in tax on lemons. Assume that the only goods in the economy are oranges and lemons (substitutes). Using the relevant diagrams, illustrate and explain the impact of a decrease in tax on lemons. Assume that the only goods in the economy are oranges and lemons (complements). Using the relevant diagrams, illustrate and explain the impact of an increase in tax on lemons. Assume that the only goods in the economy are oranges and lemons (complements). Using the relevant diagrams, illustrate and explain the impact of a decrease in tax on lemons