The angular acceleration of a wheel is a $=8\mathrm{.}0$t$*-8\mathrm{.}02,$ with a in radians per second$-$squared and t in seconds. At time t $=0,$ the wheelhas an angular velocity of $+6$ rad$/$s and an angular position of $+3$ rad. Write expressions for $($a$)$ the angular velocity $($rad$/$s$)$ and $($b$)$ the angular position $($rad$)$ as functions of time $($s$).$