It is currently 17 Aug 2017, 18:22

### 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

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# Veritas Algebra Lesson Book Question 91 explanation

Author Message
Intern
Joined: 29 Feb 2016
Posts: 2

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

Veritas Algebra Lesson Book Question 91 explanation [#permalink]

### Show Tags

21 Mar 2016, 12:20
91. If g is a function defined for all x by g(2x) = (x^4)/ 16, then what is the value of g(2x) in terms of g(x)?

I'm not sure where to go with this one. Any help?

Thanks

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

Veritas Prep GMAT Instructor
Joined: 16 Oct 2010
Posts: 7564

Kudos [?]: 16362 [0], given: 229

Location: Pune, India
Re: Veritas Algebra Lesson Book Question 91 explanation [#permalink]

### Show Tags

21 Mar 2016, 21:57
grahsar wrote:
91. If g is a function defined for all x by g(2x) = (x^4)/ 16, then what is the value of g(2x) in terms of g(x)?

I'm not sure where to go with this one. Any help?

Thanks

If f(x) = 24x + 5
what is f(2x)?
What do you do? You put 2x in place of x everywhere and proceed.
So
f(2x) = 24(2x) + 5

In this question, g(2x) is defined for you. You need g(x)
g(2x) = x^4/16

You need g(x) so in place of 2x you substitute x everywhere.
First, bring in a 2x.

$$g(2x) = \frac{x^4}{16} = \frac{16*x^4}{16*16} = \frac{(2x)^4}{16*16}$$

Now replace 2x by x.
$$g(x) = \frac{x^4}{16*16}$$
_________________

Karishma
Veritas Prep | GMAT Instructor
My Blog

Get started with Veritas Prep GMAT On Demand for \$199

Veritas Prep Reviews

Kudos [?]: 16362 [0], given: 229

Re: Veritas Algebra Lesson Book Question 91 explanation   [#permalink] 21 Mar 2016, 21:57
Similar topics Replies Last post
Similar
Topics:
1 Zero is a non-negative integer. Data Sufficiency Question on Veritas 1 27 May 2017, 22:54
1 Doubt in a Veritas GMAT exam question 2 22 Oct 2015, 22:49
Veritas Prep Free Question bank & CATS 2 08 Nov 2016, 20:21
veritas prep 0 03 May 2015, 02:36
3 Repeat questions In veritas cats 2 06 Nov 2014, 03:00
Display posts from previous: Sort by