Final answer:
To convert a mixed number to an improper fraction, multiply the whole number by the denominator and add the numerator. None of the given options is equal to 71/4.
Step-by-step explanation:
To convert a mixed number to an improper fraction, multiply the whole number by the denominator and add the numerator. In this case, 7 multiplied by 4 is 28, and adding 1 gives us 29. So, 7 and 1/4 as an improper fraction is 29/4. Therefore, none of the given options is equal to 71/4.
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