GMAT Question of the Day - Daily to your Mailbox; hard ones only

 It is currently 22 Sep 2018, 17:50

### 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

# The function f(x) is defined for all values x as f(x)=x^4/9. What is t

Author Message
TAGS:

### Hide Tags

Math Expert
Joined: 02 Sep 2009
Posts: 49303
The function f(x) is defined for all values x as f(x)=x^4/9. What is t  [#permalink]

### Show Tags

24 Apr 2017, 04:47
00:00

Difficulty:

25% (medium)

Question Stats:

77% (01:21) correct 23% (00:59) wrong based on 106 sessions

### HideShow timer Statistics

The function f(x) is defined for all values x as $$f(x)=\frac{x^4}{9}$$. What is the value of f(3x) in terms of f(x)?

A. f(x)/9
B. f(x)/3
C. 9f(x)
D. 27f(x)
E. 81f(x)

_________________
BSchool Forum Moderator
Joined: 26 Feb 2016
Posts: 3136
Location: India
GPA: 3.12
The function f(x) is defined for all values x as f(x)=x^4/9. What is t  [#permalink]

### Show Tags

24 Apr 2017, 05:31
1
1
We already know that $$f(x) = \frac{x^4}{9}$$.
Hence, $$f(3x) = \frac{(3x)^4}{9} = 9x^4$$

Now since we need f(3x) in terms of f(x),
we can compute f(3x) = 81f(x) because $$81f(x) = \frac{81*x^4}{9} = 9x^4$$ which is equal of f(3x) (Option E)
_________________

You've got what it takes, but it will take everything you've got

Non-Human User
Joined: 09 Sep 2013
Posts: 8153
Re: The function f(x) is defined for all values x as f(x)=x^4/9. What is t  [#permalink]

### Show Tags

25 Aug 2018, 09:18
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
_________________
Re: The function f(x) is defined for all values x as f(x)=x^4/9. What is t &nbs [#permalink] 25 Aug 2018, 09:18
Display posts from previous: Sort by

# The function f(x) is defined for all values x as f(x)=x^4/9. What is t

## Events & Promotions

 Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.