Identify the expression which represents the calculation "add 8 and 7, then multiply by 2." a) (2 × 8) + 7 b) 8 + (7 × 2) eliminate c) 2 + (8 × 7) d) 2 x (8 + 7)

The correct answer is choice D.

In this choice you first add 8 + 7 inside of the parentheses. Remember, using the correct order of operations, you do what is inside of the parentheses first, and then multiply by the 2 which is outside of them.

b. a single paragraph.

a paragraph is a series of sentences that are organized and make sense, and are all related to a single topic . almost every piece of writing you do that is longer than a few sentences should be organized into paragraphs. this is because paragraphs show a reader where the subdivisions of an essay begin and end, and thus the reader see the organization of the essay into subjects in order to be able to understand its main points.

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