If a patient needs 3 tablets by mouth daily for 7 days, how many tablets should the technician count out?

The correct answer involves calculating the total number of tablets needed for the patient's dosage over the specified duration. The patient is instructed to take 3 tablets by mouth daily. If this is required for 7 days, you would perform the following calculation:

Multiply the number of tablets needed each day (3 tablets) by the total number of days (7 days):

3 tablets/day × 7 days = 21 tablets.

This total reflects the cumulative amount required for the entire week, ensuring that the patient has enough medication for the prescribed course. Thus, counting out 21 tablets is necessary to meet the patient's needs for the 7-day regimen.