Use mesh analysis to find $I_2$ and $V_o$ in the circuit shown, given that
$V_1 = 9 V$,
$R_1 = 5 k\Omega$,
$R_2 = 2 k\Omega$,
$R_3 = 7 k\Omega$, and
$R_4 = 8 k\Omega$.

$I_2=$ $mA$
$V_o=$ $V$