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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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sandy
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If f(x) = x + 5 and f(2g) = 19, what is the value of f(3 – g [#permalink] New post   24 Jul 2018, 05:57
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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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Akash03jain
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Re: If f(x) = x + 5 and f(2g) = 19, what is the value of f(3 – g [#permalink] New post   27 Jul 2018, 17:09
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2g+5=19

it implies: g=7.

Therefore, f(3-g)= 3-g+5

=3-7+5

=1.

I hope this is correct.
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Re: If f(x) = x + 5 and f(2g) = 19, what is the value of f(3 – g [#permalink] New post   31 Jul 2018, 14:19
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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.
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Re: If f(x) = x + 5 and f(2g) = 19, what is the value of f(3 g [#permalink] New post   06 Jul 2023, 01:05
Hello from the GRE Prep Club BumpBot!

Thanks to another GRE Prep Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

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Re: If f(x) = x + 5 and f(2g) = 19, what is the value of f(3 g [#permalink]
06 Jul 2023, 01:05
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