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If f(x) = x + 5 and f(2g) = 19, what is the value of f(3 – g
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24 Jul 2018, 05:57
24 Jul 2018, 05:57
1
Expert Reply
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Question Stats:
86% (00:51) correct
13% (01:10) wrong based on 43 sessions
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Re: If f(x) = x + 5 and f(2g) = 19, what is the value of f(3 – g
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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
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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 \(f(3 - 7) = f(-4) = -4 + 5 = 1\).
