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.
A function is defined for all positive numbers x as f(x)= a
[#permalink]
15 May 2019, 05:21
15 May 2019, 05:21
Expert Reply
00:00
Question Stats:
92% (01:28) correct
7% (02:26) wrong based on 27 sessions
Hide Show timer Statistics
A function is defined for all positive numbers x as \(f(x)= a\sqrt{x} +b\). What is the value of f(3), if f(4) – f(1) = 2 and f(4) + f(1) = 10?
A. \(1\)
B. \(2\)
C. \(2 \sqrt{3}\)
D. \(2\sqrt{3} + 2\)
E. \(2 \sqrt{3} -2\)
A. \(1\)
B. \(2\)
C. \(2 \sqrt{3}\)
D. \(2\sqrt{3} + 2\)
E. \(2 \sqrt{3} -2\)
Re: A function is defined for all positive numbers x as f(x)= a
[#permalink]
17 Apr 2020, 04:13
17 Apr 2020, 04:13
Expert Reply
solve for expressions
we get a=2and b =2
so for f(3) = 2√3+ 2
D is the answer
we get a=2and b =2
so for f(3) = 2√3+ 2
D is the answer
gmatclubot
Re: A function is defined for all positive numbers x as f(x)= a [#permalink]
17 Apr 2020, 04:13
Moderators:
