Exercise 1 Page 407

We are given the function and asked to evaluate it for some given values. This means that we should substitute $1,$ $2,$ and $3$ for $x$ in the given expression and then evaluate. Let's start with $1.$ Now, let's do the same thing for the rest of the values.

Input, $x$	$3-2^x$	Output, $y$
$1$	$3-2^1$	$1$
$2$	$3-2^2$	$\text{-}1$
$3$	$3-2^3$	$\text{-}5$