The answer is C. double-click

By definition a computer is an electronic device used to store and compute data. So, by definition a calculator stores and interprets data/numbers, and that makes it a computer. However, a computer can also use programs, and manipulate stored data to complete those programs.
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Answer:
Sum = 3
Sum = 9
Sum = 18
Sum = 30
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Indentation and alignment are very noticeable on a printed page, so you will probably want to set the tab stops in your document precisely how you want them.