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8. If [tex]$f(x)=-x+7$[/tex], what is [tex]$f(15)$[/tex]?

A. [tex][tex]$f(15)=8$[/tex][/tex]
B. [tex]$f(15)=-22$[/tex]
C. [tex]$f(15)=-8$[/tex]
D. [tex][tex]$f(15)=22$[/tex][/tex]



Answer :

GinnyAnswer
To determine the value of [tex]\( f(15) \)[/tex] given the function [tex]\( f(x) = -x + 7 \)[/tex], follow these steps:

1. Begin by substituting [tex]\( x = 15 \)[/tex] into the function [tex]\( f(x) \)[/tex].

[tex]\[ f(15) = -15 + 7 \][/tex]

2. Simplify the expression on the right-hand side:

[tex]\[ f(15) = -15 + 7 \][/tex]

3. Perform the arithmetic operation:

[tex]\[ -15 + 7 = -8 \][/tex]

Therefore, the value of [tex]\( f(15) \)[/tex] is [tex]\(-8\)[/tex].

The correct choice is:
[tex]\[ f(15) = -8 \][/tex]

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