To specify how many cups of flour should be used in a bread recipe, the number should be a non-negative real number. Let's examine the options:
- 47: This is a positive integer, so it could be used.
- 4 sevenths (approximately 0.57): This is a positive fraction, so it could be used.
- -3: This is a negative number, so it cannot be used.
- 334: This is a positive integer, so it could be used.
- 3 and 3 fourths (which is 3.75): This is a positive mixed number, so it could be used.
- 3–√ (the square root of 3, approximately 1.73): This is a positive number, so it could be used.
So, the valid options for cups of flour would be:
- 47
- 4 sevenths
- 334
- 3 and 3 fourths
- 3–√
Overall, the following numbers could be used to specify how many cups of flour should be used in a recipe: 47, 4 sevenths, 334, 3 and 3 fourths, and 3–√.
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