Mystic Lake Inc. bottles and distributes spring water. On July 9 of the current year, Mystic Lake reacquired 40,000 shares of its common stock at $44 per share. On September 22, Mystic Lake Inc. sold 30,000 of the reacquired shares at $50 per share. The remaining 10,000 shares were sold at $43 per share on November 23. a. Journalize the transactions of July 9, September 22, and November 23. b. What is the balance in Paid-In Capital from Sale of Treasury Stock on December 31 of the current year? For what reasons might Mystic Lake have purchased the treasury stock?