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Answer: A, B, D are irrational</h3>
Basically everything but choice C
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Explanation:
sqrt is shorthand for square root
sqrt(4) = 2 = 2/1 showing that sqrt(4) is rational. We can write it as a fraction of two whole numbers, where 0 is not in the denominator.
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In contrast, we cannot write sqrt(2), sqrt(3), or sqrt(5) as a fraction of two whole numbers. Using your calculator, note how
sqrt(2) = 1.4142135623731
sqrt(3) = 1.73205080756888
sqrt(5) = 2.23606797749979
all of those decimal expansions go on forever without any pattern, which is a sign that those numbers are irrational. If they were rational, then a pattern would repeat at some point or the decimals would terminate at some point.
The answer would be 409 excluding whatever "..." meanings
Answer:
The original amount is always 100% at the start.
Adding 100% will make the amount 200%, which is double the original amount.
Adding 200% will make the amount 300%, which is triple the original amount.