$[3/4$ Points$]$

COLFUNPHYS$115.$P$\mathrm{.}006.$

Suppose that, for the graph shown below, each division on the time scale represents $2\mathrm{.}50{10}^{-3}s$ and divisions on the displacement scale are in $1$ cm increments.

$($a$)$ Find the amplitude.

$($b$)$ Find the period.

$($c$)$ Find the frequency.

$($d$)$ Find$\_$the displacement at $t=0\mathrm{.}03s$