GRE Prep 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
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
8x-5
[#permalink]
25 Apr 2021, 11:39
25 Apr 2021, 11:39
Expert Reply
00:00
Question Stats:
64% (01:18) correct
35% (00:37) wrong based on 17 sessions
Hide Show timer Statistics
Quantity A |
Quantity B |
\(8x-5\) |
\(x^2+16 \) |
A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
Kudos for the right answer and explanation
Question part of the project GRE Quantitative Reasoning Daily Challenge - (2021) EDITION
GRE - Math Book
Retired Moderator
Joined: 16 Apr 2020
Status:Founder & Quant Trainer
Affiliations: Prepster Education
Posts: 1546
Given Kudos: 172
Location: India
WE:Education (Education)
Re: 8x-5
[#permalink]
26 Apr 2021, 05:35
26 Apr 2021, 05:35
1
Carcass wrote:
Quantity A |
Quantity B |
\(8x-5\) |
\(x^2+16 \) |
A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
Check with some values which are distant;
When \(x = 0\), Col. A < Col. B
When \(x = 10\), Col. A < Col. B
When \(x = -10\), Col. A < Col. B
Hence, option B
We can also plot the graph of these equations and notice that \(y = x^2 + 16\) (Parabola) will always have a greater output value than \(y = 8x - 5\) (Line)
Attachments
Graph.png [ 29.2 KiB | Viewed 2055 times ]
