It is currently 26 Mar 2019, 05:11

### GMAT Club Daily Prep

#### 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

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

# x > 0

Author Message
TAGS:
GRE Prep Club Legend
Joined: 07 Jun 2014
Posts: 4857
GRE 1: Q167 V156
WE: Business Development (Energy and Utilities)
Followers: 105

Kudos [?]: 1783 [0], given: 397

x > 0 [#permalink]  22 Apr 2018, 13:56
Expert's post
00:00

Question Stats:

70% (00:27) correct 29% (00:46) wrong based on 17 sessions
$$x > 0$$

 Quantity A Quantity B $$(\frac{1}{3})^x$$ $$(\frac{-1}{2})^x$$

A. Quantity A is greater.
B. Quantity B is greater.
C. The two quantities are equal.
D. The relationship cannot be determined from the information given.

Drill 1
Question: 9
Page: 353-354
[Reveal] Spoiler: OA

_________________

Sandy
If you found this post useful, please let me know by pressing the Kudos Button

Try our free Online GRE Test

GRE Prep Club Legend
Joined: 07 Jun 2014
Posts: 4857
GRE 1: Q167 V156
WE: Business Development (Energy and Utilities)
Followers: 105

Kudos [?]: 1783 [0], given: 397

Re: x > 0 [#permalink]  22 Apr 2018, 14:12
Expert's post
Explanation

Evaluate the relationship between the quantities by plugging in values for x.

If x = 2, then Quantity A is $$\frac{1}{9}$$ and Quantity B is $$\frac{1}{4}$$; Quantity B is greater, so eliminate answer choices
(A) and (C).

Now, if x = 3, then Quantity A is $$\frac{1}{27}$$and Quantity B is $$\frac{-1}{8}$$; Quantity A is now greater, so eliminate choice (B), and you’re left with choice (D).
_________________

Sandy
If you found this post useful, please let me know by pressing the Kudos Button

Try our free Online GRE Test

Manager
Joined: 26 Jan 2018
Posts: 182
Followers: 0

Kudos [?]: 110 [0], given: 3

Re: x > 0 [#permalink]  23 Apr 2018, 03:57
Can be checked for 1 and 2,

In each of these 2 cases, either of the terms have higher values. Hence the answer is D.
Re: x > 0   [#permalink] 23 Apr 2018, 03:57
Display posts from previous: Sort by