Question

A typical dose for a 100?-pound person is 2121 mg every six hours how many tablets can this person take in one week

Answer 1

That depends how many mg are in each tablet.  He will need to take medication 28 times if its every 6 hours per 7 day week.  But the dosage could be given in more than one pill.  Hope this helps!

Answer 2

 your questions are thoroughly solved in the attachments