How do you find $f(4)$ given $f(x)=x-11$ ?

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Answer 1 · 2018-06-01T14:46:06

See a solution process below:

For each occurrence of $color(red)(x)$ in the function substitute $color(red)(4)$ and calculate the result:

$f(color(red)(x)) = color(red)(x) - 11$ becomes:

$f(color(red)(4)) = color(red)(4) - 11$

$f(color(red)(4)) = -7$

How do you find f(4)f(4) given f(x)=x-11f(x)=x-11?