Answer:
Reports communicate information which has been compiled as a result of research and analysis of data and of issues. Reports can cover a wide range of topics, but usually focus on transmitting information with a clear purpose, to a specific audience. Good reports are documents that are accurate, objective and complete. They should also be well-written, clearly structured and expressed in a way that holds the reader's attention and meets their expectations.
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Leonardo da Vinci was a very famous painter. I would assume that he is an expert in painting.
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Multiply 5 times 5, then times 11, and you'll get 275.