Suppose the own price elasticity of demand for good X is – 2, its income elasticity is 3, its advertising elasticity is 4, and the cross-price elasticity of demand between it and good Y is –6. Determine how much the consumption of this good will change if:
a. The price of good X increases by 5 percent.
b. The price of good Y increases by 10 percent.
c. Advertising decreases by 2 percent.
d. Income falls by 3 percent.