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.
CRA II or Senior CRA â Definition and Requirements. According to Good Clinical Practice (GCP) a clinical research associate (CRA) is a clinical research professional that âmonitorsâ trials. Thus they are also referred to as âmonitorsâ. An experienced CRA can be promoted for a position as a âsenior CRAâ also known as âCRA IIâ.