Several local golf tournaments are coming up and Gerald needs to purchase new clubs in preparation. He has set a $150 budget and will choose clubs that will give him as much utility as possible. A local sporting goods store sells golf clubs at a retail price of $30 and Gerald purchases 2. A few buddies tell Gerald about an online store that offers clubs at a discounted price of $21, while all other prices remain the same, and Gerald decides to purchase 3 clubs from the online store to keep on hand. Given this information, plot Gerald's demand curve for golf clubs