Answer:
3,000
Explanation:
Data provided in the question:
Number of shares authorized = 15,000
Number if shares issued = 4,500
Number of shares repurchased = 1,500
Now,
Total shares outstanding = Shares issued - Shares repurchased
or
Total shares outstanding = 4500 - 1,500
or
Total shares outstanding = 3,000
Hence,
3,000 shares are outstanding at December 31