Precalculus Examples

$f (n) = 2 n + 1$ $g (n) = 3 n$ Find $f (n) + g (n)$

Step 1

Replace the function designators in $f (n) + g (n)$ with the actual functions.

$2 n + 1 + 3 n$

Step 2

Simplify $2 n + 1 + 3 n$ .

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Step 2.1

Remove parentheses.

$2 n + 1 + 3 n$

Step 2.2

Add $2 n$ and $3 n$ .

$5 n + 1$