A roofer shouldn't charge by the hour he should charge by the square. In a square their is 100 sq.ft and they usually charge $300 per square. roofer shouldn't charge by the hour he should charge by the square. In a square their is 100 sq.ft and they usually charge $300 per square.
In the United States, the certified nursing assistant (CNA) typically works in a nursing home or hospital, and performs everyday living tasks for the elderly, chronically sick, or rehabilitation patients who cannot care for themselves.
What is a CNA. Certified nursing assistants (also known as Nursing Aide, Nursing Assistant, Auxiliary Nurse, Patient Care Assistant, and Home Health Aide) are paraprofessionals who helps patients with basic health care needs under the supervision of a registered nurse, licensed practical nurse or other healthcare professionals.