Can someone please explain this? Thank you

Suppose the own price elasticity of demand for good Xis 2, its income elasticity is 3, its advertising elasticity is 4, and the cross-price elasticity of demand between it and good Yis 6- Determine howr much the consumption ofthis good will change if: Instructions: Enter your responses as percentages. Include a minus H sign for all negative answers. a- The price of good Xdecreases by 5 percent. |:| percent b. The price of good Yincreases by 1D percent. |:| percent c. Advertising decreases by 2 percenL |:| percent d.lncome increases by 3 percent. |:| percent