BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem

Target Test Prep · GMAT

Choose how you want to prepare

Learn live with an expert or move at your own pace. Every option includes the complete TTP study system.

★★★★★5.0559 reviews
GMATLiveTeach 7 seats left
Chris Peckover
NEXT LIVE COHORT

Oct 13 to Jan 7, 2027

with Chris Peckover

Schedule
Tue, Thu · 8:00 to 10:00 PM ET
Included
40 live hours + 6 months of GMAT OnDemand
  • Live instruction and real-time questions
  • Class recordings and assigned practice
View class & enroll
Limited cohort · enrollment openTarget Test Prep
EALiveTeach 5 seats left
Logan Thompson
EXECUTIVE ASSESSMENT

Sep 6 to Dec 6, 2026

with Logan Thompson

Schedule
Sun · 9:30 AM to 12:30 PM ET
Included
40 hours of live online classes plus six months of access to the complete TTP EA OnDemand course.
  • 165+ EA Score Guarantee
  • 4,100+ Quant, Verbal, and Integrated Reasoning practice questions
  • 400+ hours of in-depth video lessons
  • 3,000+ step-by-step video solutions
View EA class & enroll
Limited cohort · enrollment openTarget Test Prep
GMATOnDemand Start anytime
SELF-PACED MASTERCLASS

Target Test Prep GMAT OnDemand

Complete access from day one. Study on your schedule.

715+ score guarantee
$0to start then $127/mo
  • Personalized study plan and analytics
  • Thousands of lessons and practice questions
Start free 5-day trial
Read 559 reviewsTarget Test Prep

Compare the format, schedule, and included access before enrolling. Prices and seat counts shown reflect the supplied offer details.

what is the value!

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
User avatar
Master | Next Rank: 500 Posts
Posts: 407
Joined: Tue Jan 25, 2011 9:19 amFollowed by: 7 members
Thanked: 25 times
by Ozlemg » Mon Jul 04, 2011 1:06 pm
What is the value of 0.5(x^2) - 1.4x - 0.7 for x = 1.4 ?
(A) -0.28
(B) -0.54
(C) -0.72
(D) -1.42
(E) -1.68
The more you suffer before the test, the less you will do so in the test! :)
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Source: — Problem Solving |
User avatar
Master | Next Rank: 500 Posts
Posts: 143
Joined: Sat Nov 06, 2010 9:06 pmFollowed by: 1 member
Thanked: 10 times

by edvhou812 » Mon Jul 04, 2011 4:18 pm
I got -1.68, or E. Just plug in 1.4 whenever you see 'X'.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
Master | Next Rank: 500 Posts
Posts: 489
Joined: Tue Jul 05, 2011 11:10 amFollowed by: 5 members
Thanked: 28 times

by gmatblood » Tue Jul 05, 2011 12:01 pm
a) -0.28
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
GMAT Instructor
Posts: 23
Joined: Thu Jun 09, 2011 11:34 pmFollowed by: 6 members
Location: New York City
Thanked: 17 times

by Jim@Knewton » Tue Jul 05, 2011 2:11 pm
0.5(x^2) - 1.4x - 0.7 for x = 1.4
=> 0.5*(1.4^2) - (1.4^2) - 0.7
=> -0.5*(1.4^2)- 0.7 ..........but -0.5*(1.4^2) = - (1.4)*0.7
=> -0.7*(1.4+1)
[spoiler]=> -1.68
Hence E[/spoiler]
In such questions, usually look for a way to solve rather than compute - computations can be time consuming and comparatively more prone to error! :-)
Last edited by Jim@Knewton on Tue Jul 05, 2011 4:51 pm, edited 1 time in total.
Best, Jim
Please "thank" this post if it helps you!
https://www.knewton.com/people/jims
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Newbie | Next Rank: 10 Posts
Posts: 3
Joined: Sun Jun 26, 2011 5:05 am
Thanked: 1 times

by mbacult » Tue Jul 05, 2011 4:29 pm
From earlier post-
>>=> -0.5*(1.4^2)- 0.7 ..........but -0.5*(1.4^2) = - (1.4)*0.7
>>=> -0.7*(1.4-1)

Instead of the last line above, it should be => -0.7*(1.4+1)
giving the ans -1.68
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
GMAT Instructor
Posts: 23
Joined: Thu Jun 09, 2011 11:34 pmFollowed by: 6 members
Location: New York City
Thanked: 17 times

by Jim@Knewton » Tue Jul 05, 2011 4:59 pm
Thank you mbacult - just edited the typo!

...and gmatblood, I thought you posted the OA -that would be the case if:
0.5(x^2) - 1.4x + 0.7 for x = 1.4
=> 0.5*(1.4^2) - (1.4^2) + 0.7
=> -0.5*(1.4^2)+ 0.7 ..........but -0.5*(1.4^2) = - (1.4)*0.7
=> -0.7*(1.4-1)
=> -0.28
for the +0.7
Best, Jim
Please "thank" this post if it helps you!
https://www.knewton.com/people/jims
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Master | Next Rank: 500 Posts
Posts: 152
Joined: Wed Mar 12, 2008 4:36 pmFollowed by: 2 members
Thanked: 8 times

by artistocrat » Tue Jul 05, 2011 6:04 pm
-1.68. Factor or don't factor, it's about the same amount of time. Knowing squares helps. eg.14x14. Seeing that 0.7 is a factor of 1.4 helps. But like I said this could just be calculated. Unlikely to see something this easy on the GMAT.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Junior | Next Rank: 30 Posts
Posts: 21
Joined: Sun Jun 05, 2011 10:39 pmFollowed by: 1 member
Thanked: 2 times

by worldpeace93 » Tue Jul 05, 2011 10:23 pm
I got answer as -1.68
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1