It is a hot day, and Bert is thirsty. Here is the value he places on each bottle of water:

Value of first bottle $7 Value of second bottle $5 Value of third bottle $3 Value of fourth bottle $1

a. From this information, derive Bert’s demand schedule. Graph his demand curve for bottled water.

b. If the price of a bottle of water is $4, how many bottles does Bert buy? How much consumer surplus does Bert get from his purchases? Show Bert’s consumer surplus in your graph.

c. If the price falls to $2, how does quantity demanded change? How does Bert’s consumer surplus change? Show these changes in your graph.