In 2015, Alex has income from wages of $16,000, adjusted gross income of $18,000, and tax liability of $300 before the earned income credit.

In 2015, Alex has income from wages of $16,000, adjusted gross income of $18,000, and tax liability of $300 before the earned income credit. What is the amount of Alex's earned income credit for 2015, assuming he is single and his 5-year-old dependent son lives with him for the full year?