Precalculus Examples

Given $g (x) = 2 x + 3$ ; find $g (- 3)$

Step 1

Replace the variable $x$ with $- 3$ in the expression.

$g (- 3) = 2 (- 3) + 3$

Step 2

Simplify $2 (- 3) + 3$ .

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Step 2.1

Remove parentheses.

$2 (- 3) + 3$

Step 2.2

Multiply $2$ by $- 3$ .

$- 6 + 3$

Step 2.3

Add $- 6$ and $3$ .

$- 3$