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:
Does GMAT RC seem like an uphill battle? e-GMAT is conducting a free webinar to help you learn reading strategies that can enable you to solve 700+ level RC questions with at least 90% accuracy in less than 10 days. Sat., Oct 19th at 7 am PDT
2) Know nothing about x -----> INSUFFICIENT - eliminate B & D
1) 3^(x+y)^2 > 9^xy - break bases up into their prime factors: 3^(x+y)^2 > (3^2)^xy ----> 3^(x+y)^2 > 3^2xy - since bases are the same all we need to look at are the exponents: (x + y)^2 > 2xy - distribute the left side: x^2 + 2xy + y^2 > 2xy - x^2 + y^2 > 0 -----> since any number squared will always be positive or 0, all this tells us is that x & y each aren't equal to zero.
Since they can be any combo of positive and negative numbers this is insufficient ----> eliminate A
1 & 2) Since x can still be anything but zero this does not help us much.
Answer: E
_________________
Adam Rosman, MD University of Chicago Booth School of Business, Class of 2020 adam@alldaytestprep.com
Unlimited private GMAT Tutoring in Chicago for less than the cost a generic prep course. No tracking hours. No watching the clock. https://www.alldaytestprep.com