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On May 4, 2016, Docker, Inc., purchased 650 shares of its own common stock in the market at a price of $18.50 per share. On September 19, 2016, 300 of these shares were sold in the open market at a price of $20.50 per share. There were 34,000 shares of Docker common stock outstanding prior to the May 4 purchase of treasury stock. A $0.45 per share cash dividend on the common stock was declared and paid on June 15, 2016.

a. Use the horizontal model on Docker's financial statements for the purchase of the treasury stock on May 4, 2016.(Use amounts with + for increases and amounts with - for decreases.)