Suppose the own price elasticity of demand for goodXis -5, its income elasticity is 2, its advertising elasticity is 3, and the cross-price elasticity of demand between it and goodYis 6. Determine how much the consumption of this good will change if:

a. The price of goodXdecreases by 4 percent.

percent

b. The price of goodYincreases by 7 percent.

percent

c. Advertising decreases by 3 percent.

percent

d. Income increases by 2 percent.

percent