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If f(x)=x^2+5x+3, then what is the value of f(-4)?

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If f(x)=x^2+5x+3, then what is the value of f(-4)? [#permalink]

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New post 09 Aug 2017, 18:58
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C
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Question Stats:

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If f(x)=x^2+5x+3, then what is the value of f(-4)?

(A) –7
(B) –4
(C) –1
(D) 4
(E) 39
[Reveal] Spoiler: OA

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Re: If f(x)=x^2+5x+3, then what is the value of f(-4)? [#permalink]

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New post 09 Aug 2017, 19:37
f(x) =\(x^2+5x+3\)

f(-4) = \((-4)^2+5*(-4) +3\) = 16 - 20 + 3 = -1

Answer is C

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Re: If f(x)=x^2+5x+3, then what is the value of f(-4)? [#permalink]

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New post 10 Aug 2017, 22:08
picollopikachu wrote:
If f(x)=x^2+5x+3, then what is the value of f(-4)?

(A) –7
(B) –4
(C) –1
(D) 4
(E) 39

\(f(x)=x^2+5x+3\)

\(f(-4) = (-4)^2 + 5(-4) + 3\)

\(f(-4) = 16 -20 + 3 => -1\)

Answer (C)...

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Re: If f(x)=x^2+5x+3, then what is the value of f(-4)? [#permalink]

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New post 10 Aug 2017, 22:56
picollopikachu wrote:
If f(x)=x^2+5x+3, then what is the value of f(-4)?

(A) –7
(B) –4
(C) –1
(D) 4
(E) 39


Since we have been asked to find the value of f(-4)
Here x=-4, for the expression f(x) = \(x^2+5x+3\)

Plugging values of x, we get
\(x^2+5x+3 = (-4)^2 +5(-4) + 3 = 16 - 20 + 3 = -1\)(Option C)
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Re: If f(x)=x^2+5x+3, then what is the value of f(-4)?   [#permalink] 10 Aug 2017, 22:56
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