Write as a Function of n a(n)=3n-20

$a (n) = 3 n - 20$

Divide each term in $a n = 3 n - 20$ by $n$ and simplify.

Divide each term in $a n = 3 n - 20$ by $n$ .

$\frac{a n}{n} = \frac{3 n}{n} + \frac{- 20}{n}$

Simplify the left side.

Cancel the common factor of $n$ .

Cancel the common factor.

$\frac{a n}{n} = \frac{3 n}{n} + \frac{- 20}{n}$

Divide $a$ by $1$ .

$a = \frac{3 n}{n} + \frac{- 20}{n}$

Simplify the right side.

Simplify each term.

Cancel the common factor of $n$ .

Cancel the common factor.

$a = \frac{3 n}{n} + \frac{- 20}{n}$

Divide $3$ by $1$ .

$a = 3 + \frac{- 20}{n}$

Move the negative in front of the fraction.

$a = 3 - \frac{20}{n}$

To rewrite as a function of $n$ , write the equation so that $a$ is by itself on one side of the equal sign and an expression involving only $n$ is on the other side.

$f (n) = 3 - \frac{20}{n}$

Write as a Function of n a(n)=3n-20

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