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.
Certified nurse assistants (CNAs) perform basic healthcare duties in hospitals and care facilities under the supervision of a registered nurse or licensed vocational nurse. In most states, aspiring CNAs must complete an approved training program and a competency test.equirements vary by state. Generally, applicants must apply to register as a nurse assistant with their state health department and pass a written competency examination upon completion of an approved training program.