Evaluate f(-3)=2^-3

$f (- 3) = 2^{- 3}$

Step 1

Move $- 3$ to the left of $f$ .

$- 3 f = 2^{- 3}$

Step 2

Rewrite the expression using the negative exponent rule $b^{- n} = \frac{1}{b^{n}}$ .

$- 3 f = \frac{1}{2^{3}}$

Step 3

Raise $2$ to the power of $3$ .

$- 3 f = \frac{1}{8}$

Step 4

The result can be shown in multiple forms.

Exact Form:

$- 3 f = \frac{1}{8}$

Decimal Form:

$- 3 f = 0.125$