Answer:

A strong thesis statement expresses one main idea.
Readers need to be able to see that your paper has one main point. If your thesis statement expresses more than one idea, then you might confuse your readers about the subject of your paper.
Explanation:
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<span>Expository writing is used to describe something, so yes it can be used for both!
Hope this helps! :)
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A predicate noun is a noun that is part of the predicate. In the given sentences above, the sentence that contains a predicate noun is this: <span>Mario is a video-game character. The predicate noun here is video-game character. The answer would be the first one. Hope this answers your question.</span>
I don't really understand your question but if you where asking what a good estimation of 5+4 it would 8