In addition to $1$ m $=39\mathrm{.}37$ in$.,$ the following exact conversion equivalents are given:

$1$ mile $=5280$ ft $,1$ ft $=12$ in $,1$ hour $=60$ min, and $1$ min $=60$ s$.$ If a particle has a velocity of $8\mathrm{.}4$

miles per hour,its velocity, in m$/$s$,$ is closest to

A$)4\mathrm{.}5$ m$/$s$.$ B$)3\mathrm{.}4$ m$/$s$.$ C$)3\mathrm{.}8$ m$/$s$.$ D$)4\mathrm{.}1$ m$/$s$.$ E$)3\mathrm{.}0$ m$/$s$.$

$6)$

$4$