Yungzay2000idn
Answered

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If [tex]\( f(x) = 5x + 40 \)[/tex], what is [tex]\( f(x) \)[/tex] when [tex]\( x = -5 \)[/tex]?

A. [tex]\(-9\)[/tex]
B. [tex]\(-8\)[/tex]
C. [tex]\(7\)[/tex]
D. [tex]\(15\)[/tex]

Sagot :

GinnyAnsweridn
To determine the value of [tex]\( f(x) \)[/tex] when [tex]\( x = -5 \)[/tex] in the function [tex]\( f(x) = 5x + 40 \)[/tex], follow these steps:

1. Substitute the value of [tex]\( x \)[/tex] into the function.
[tex]\[ f(-5) = 5(-5) + 40 \][/tex]

2. Perform the multiplication inside the function.
[tex]\[ 5 \times -5 = -25 \][/tex]

3. Add the product to 40.
[tex]\[ -25 + 40 = 15 \][/tex]

Therefore, [tex]\( f(-5) = 15 \)[/tex].

Hence, the correct answer is [tex]\( \boxed{15} \)[/tex].
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