Answer and Explanation:
According to the scenario, Journal Entry  of the given data are as follows:
15-5-2018  Equity Investment A/c  Dr. $10,000 Â
 To Cash A/c    $10,000
(Being Investment on purchased stock is recorded)
15-11-2018  Cash A/c   Dr. $900
  To Dividend Revenue A/c   $900
(Being Cash dividend received is recorded)
10-12-2018  Cash A/c   Dr. $9,700
      Disposal Loss A/c  Dr. $300
   To Equity Investment A/c   $10,000
(Being Disposed off investment is recorded) Â