Question

given $f(x)=6x - 9$
a) evaluate $f(3)$
$f(3) = $
b) solve $f(x)= - 27$
$x = $
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Explanation:

Step1: Substitute $x=3$ into $f(x)$

$f(3) = 6(3) - 9$

Step2: Calculate the value

$f(3) = 18 - 9 = 9$

Step3: Set $f(x)$ equal to $-27$

$6x - 9 = -27$

Step4: Isolate the term with $x$

$6x = -27 + 9 = -18$

Step5: Solve for $x$

$x = \frac{-18}{6} = -3$

Answer:

a) $9$
b) $-3$