During the year, Cathy received the following: 1) Dividends of $1,000 from Lindsay corporation. Cathy's father owned the stock and directed the corporation to send the dividends to Cathy. 2) A car worth $20,000 for being the 100th customer at a car dealership. 3) $2,500 cash gift from her uncle. 4) $10,000 inheritance from her grandmother. What amount must Cathy include in gross income?