How much are consumers willing to pay? (demand)

What would happen to the number of "Kookies" that would be bought at each price as the result of each of the following events:

1. Your weekly income went up $20?
2. Your girlfriend or boyfriend developed a mad craving for "Kookies"?
3. The drugstore down the street had a sale on candy bars at 10 cents each?
4. You heard the price of "Kookies" was going up 25 cents next week?