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.
If f(x) = x + 5 and f(2g) = 19, what is the value of f(3 – g
[#permalink]
24 Jul 2018, 05:57
24 Jul 2018, 05:57
1
Expert Reply
4
Bookmarks
00:00
Question Stats:
85% (00:51) correct
15% (01:10) wrong based on 40 sessions
Hide Show timer Statistics
Re: If f(x) = x + 5 and f(2g) = 19, what is the value of f(3 – g
[#permalink]
27 Jul 2018, 17:09
27 Jul 2018, 17:09
2
2g+5=19
it implies: g=7.
Therefore, f(3-g)= 3-g+5
=3-7+5
=1.
I hope this is correct.
it implies: g=7.
Therefore, f(3-g)= 3-g+5
=3-7+5
=1.
I hope this is correct.
Re: If f(x) = x + 5 and f(2g) = 19, what is the value of f(3 – g
[#permalink]
31 Jul 2018, 14:19
31 Jul 2018, 14:19
1
Expert Reply
Explanation
The main function is \(f(x) = x + 5\). The notation \(f(2g)\) indicates that you should plug \(2g\) in for all instances of x: \(f(2g) = 2g + 5\), which is also given as 19. If \(2g + 5 = 19\), then \(2g = 14\), and \(g = 7\).
The question asks for the value of \(f(3 - g)\), which is \(f(3 - 7) = f(-4) = -4 + 5 = 1\).
The main function is \(f(x) = x + 5\). The notation \(f(2g)\) indicates that you should plug \(2g\) in for all instances of x: \(f(2g) = 2g + 5\), which is also given as 19. If \(2g + 5 = 19\), then \(2g = 14\), and \(g = 7\).
The question asks for the value of \(f(3 - g)\), which is \(f(3 - 7) = f(-4) = -4 + 5 = 1\).
