It is currently 19 Sep 2019, 00:36

### 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
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

# What is the value of when f (x)=3x^ −7x+23 x=−2

 Question banks Downloads My Bookmarks Reviews Important topics
Author Message
TAGS:
Founder
Joined: 18 Apr 2015
Posts: 8120
Followers: 157

Kudos [?]: 1700 [0], given: 7473

What is the value of when f (x)=3x^ −7x+23 x=−2 [#permalink]  23 May 2019, 01:51
Expert's post
(a) What is the value of when $$f(x)=3x^2 −7x+23$$ when $$x=−2$$?

(b) What is the value of when $$h(x)=x^3 −2x^2 +x−2$$ when $$x=2$$?

(c) What is the value of when $$k(x)=\frac{5}{3} x - 7$$ when $$x=0$$?

[Reveal] Spoiler: OA
(a) 49 (b) 0 (c) −7

Math Review
Question: 3
Page: 243
Difficulty: medium

_________________
GRE Instructor
Joined: 10 Apr 2015
Posts: 2386
Followers: 77

Kudos [?]: 2353 [1] , given: 33

Re: What is the value of when f (x)=3x^ −7x+23 x=−2 [#permalink]  23 May 2019, 05:44
1
This post received
KUDOS
Expert's post
Carcass wrote:
(a) What is the value of when $$f(x)=3x^2 −7x+23$$ when $$x=−2$$?

(b) What is the value of when $$h(x)=x^3 −2x^2 +x−2$$ when $$x=2$$?

(c) What is the value of when $$k(x)=\frac{5}{3} x - 7$$ when $$x=0$$?

[Reveal] Spoiler: OA
(a) 49 (b) 0 (c) −7

Math Review
Question: 3
Page: 243
Difficulty: medium

(a) $$f(-2)=3(-2)^2 −7(-2)+23=3(4)−7(-2)+23=12−(-14)+23=26+23=49$$

(b) $$h(2)=2^3 −2(2^2)+2−2=8−2(4)+2−2=8−8+2−2=0+2−2=2−2=0$$

(c) $$k(0)=\frac{5}{3}(0)-7=0-7=-7$$
_________________

Brent Hanneson – Creator of greenlighttestprep.com

Sign up for my free GRE Question of the Day emails

Re: What is the value of when f (x)=3x^ −7x+23 x=−2   [#permalink] 23 May 2019, 05:44
Display posts from previous: Sort by

# What is the value of when f (x)=3x^ −7x+23 x=−2

 Question banks Downloads My Bookmarks Reviews Important topics

 Powered by phpBB © phpBB Group Kindly note that the GRE® test is a registered trademark of the Educational Testing Service®, and this site has neither been reviewed nor endorsed by ETS®.