Answer
$= \frac{15}{\ln 2} $
Work Step by Step
$\int^{4}_0 2^{s} ds$
$= \frac{2^{s}}{\ln 2} |^{4}_0$
$= [\frac{2^{4}}{\ln 2} ] - [\frac{2^{0}}{\ln 2} ]$
$= [\frac{16}{\ln 2} ] - [\frac{1}{\ln 2} ]$
$= \frac{16-1}{\ln 2} $
$= \frac{15}{\ln 2} $