1. If there has been a 10% increase in Consumer income between two periods, what was the percentage change in demand for foreign travel? For tobacco products? For flour? (Hint use the income elasticity values in Table 4-4.)2. Agricultural commodities are known to have a price-inelastic demand and to be necessities. How can this information allow you to explain why the income of farmersfalls (a) after a good harvest? (b) In relation to the incomes in other sectors of the economy?3. Suppose that the cross-price elasticity of demand between McIntosh and Golden Delicious apples is 0.8, between apple and apple juice is 0.5, between apples and cheese is 0.4, and between apples and beer is 0.1 What can you say about the relationship between each set of commodities?4. (a) If price of pork increases by 10 percent, by how much does demand for beef change? (b) If price of pork increases by 10 percent, by how much does demand for food change? (hint use the cross-price elasticity values in Table 4-5.)