Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized for You

we will pick new questions that match your level based on your Timer History

Track Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Thank you for using the timer!
We noticed you are actually not timing your practice. Click the START button first next time you use the timer.
There are many benefits to timing your practice, including:

(1) x^2 > 9 --> x<-3 or x>3 as given that x<0 then we have that x<-3. Sufficient.

(2) x^3 < –9 --> if x=-3 (x^3=-27<-9) then the answer will be NO (as x equals to -3 and is not less than -3) but if x=-4 (x^3=-64<-9) then the answer will be YES. Not sufficient.

Re: If x is negative, is x < 3 ? [#permalink]
10 Mar 2013, 15:02

1

This post received KUDOS

they are asking is x<-3, not if x^3<-3. -27 and -64 are the values of x^3. so x=-3 and x=-4. negative 3 isn't less than negative 3, so answer is no. negative 4 is less than negative 3, so answer is yes. insufficient.

Re: If x is negative, is x < 3 ? [#permalink]
20 Jun 2013, 13:37

1

This post received KUDOS

Statement 2 : X^3<-9 => We know (-2)^3 = -8 and (-3)^3= -27 => it isnt given in the q that x has to be an integer => x can be any decimal slightly less than -2.0 ie. -2.5^3 (-15) and thus give an answer NO & x can be any number <-3 (=>x^3 <-27)and give an answer YES. Thus, insufficient

gmatclubot

Re: If x is negative, is x < 3 ?
[#permalink]
20 Jun 2013, 13:37