Dave Ryan is the CEO of Ryan's Arcade. At the end of its accounting period, December 31, Ryan's Arcade has assets of $450,000 and abilities of $125.000 Using the accounting equation, determine the following amounts: a. Stockholders' equity as of December 31 of the current year. b. Stockholders' equity as of December 31 at the end of the next year, assuming that assets increased by $65,000 and liabilities increased by $35,000 during the year