Need help with circuit analysis exercises

Hi,

please find attached two exercises i am stuck on.

my approach for the first one is:

v = (I-1.5A)*20
I = 24V / (5+20||12)||8)

and for the second:

Z = R + ((L+R)||C)

I(t) = vs(t) / Z

I1(t) = I(t) – I2(t)

v0(t) = I1(t) * R

i’m not sure if they are right, so please help me if you can!

thanks in advance!