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

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Intern
Joined: 23 Jul 2017
Posts: 4
Location: Anguilla
If f(x)=x^2+5x+3, then what is the value of f(-4)?  [#permalink]

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09 Aug 2017, 18:58
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5% (low)

Question Stats:

97% (00:25) correct 3% (00:17) wrong based on 45 sessions

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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
Senior Manager
Joined: 24 Apr 2016
Posts: 331
Re: If f(x)=x^2+5x+3, then what is the value of f(-4)?  [#permalink]

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

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

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Joined: 04 Dec 2015
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Concentration: Technology, Strategy
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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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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

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

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

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

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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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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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