If x is the principal square root of 7, what must be true?
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o
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a. x2 = 7, and x is negative
b. x= 72, and x is negative
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c. x2 = 7, and x is positive
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d. x = 72, and xis positive

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5× 1/2 = ? a) more than 5 because you are multiplying by a whole number b) 5/10 because you multiply the numerator and denominator by 5 c) less than 5 because you are multiplying by a number that is more than 1 d) less than 5 because you are multiplying by a number that is less than 1

In the xy-plane, if the parabola with equation passes through the point (-1, -1), which of the following must be true?