Precalculus Examples

given $g (x) = - 5 x + 2$ ; find $g (4)$

Step 1

Replace the variable $x$ with $4$ in the expression.

$g (4) = - 5 \cdot 4 + 2$

Step 2

Simplify $- 5 \cdot 4 + 2$ .

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Step 2.1

Remove parentheses.

$- 5 \cdot 4 + 2$

Step 2.2

Multiply $- 5$ by $4$ .

$- 20 + 2$

Step 2.3

Add $- 20$ and $2$ .

$- 18$