Precalculus Examples

$f (x) = 4 x - 5$ , $f (6)$

Step 1

Replace the variable $x$ with $6$ in the expression.

$f (6) = 4 (6) - 5$

Step 2

Simplify $4 (6) - 5$ .

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Step 2.1

Remove parentheses.

$4 (6) - 5$

Step 2.2

Multiply $4$ by $6$ .

$24 - 5$

Step 2.3

Subtract $5$ from $24$ .

$19$

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