1 is sufficient
2 is insufficient
that's why
Q4
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Source: Beat The GMAT — Data Sufficiency |
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GMATters1001
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GMATters1001
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That last post was meant as a joke 
The stem does not specify that x must be an integer. So x could be -2.5 because (-2.5)^3<-9, or it could be -4 and therefore statement 2 is insufficient to determine whether x is less than -3.
The stem does not specify that x must be an integer. So x could be -2.5 because (-2.5)^3<-9, or it could be -4 and therefore statement 2 is insufficient to determine whether x is less than -3.
