Compute and discuss elasticities for the following cases:
A. When consumer income increases by 4%, the demand for Ramen Noodles decreases by 6%. What is the income elasticity for Ramen Noodles? Explain what this income elasticity measure tells you.
B. When the price of bread increases by 7%, the demand for butter decreases by 9%. What is the cross price elasticity? How are the two goods related - are they substitutes or complements? Explain why.
C. When the price of pork increases by 8%, the quantity of lamb purchased increases by 5%. What is the cross price elasticity? How are the two goods related - are they substitutes or complements? Explain why.