The Changs updated their bedroom by purchasing a new lamp for $89.95 and a comforter set for $239.99. They paid 2007-03-04-00-00_files/i0120000.jpg% sales tax on their purchases. If the Changs paid $351.72 total, determine if they paid the correct amount.
The answer to your question is 'The Changs paid the correct amount for their purchases'. I apologize for being late, but this answer may help others later.