What is the percentage of oxygen a patient receives when 4 liters of oxygen and 2 liters of N2O are delivered per minute?

The scope of practice for medical assisting consists of:

A) administrative skills. B) clinical skills. C) competencies. D) all of the above

Use of bar scanning for supplies is helpful to the medical biller and the:

a. janitor. b. central supply clerk. c. laundry. d. admissions clerk.