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.
Know the responsibilities of a CNA. CNA stands for certified nursing assistant. Being a CNA means being a member of a health team and working under the supervision of a certified nurse. 1  A CNA's job is hands-on. 2  You provide care to patients, residents, clients, and customers.nce you have completed your training, there is a state certification exam you need to pass in order to become a Certified Nursing Assistant. 1  You can begin preparing by knowing what to expect. 2  Most state CNA exams are divided into two sections: the written section and a clinical skills test.