No. 2 is straightforward enough, it's in the form y' + py = q where p and q are functions of t only (p in fact being a constant here).
So it's an integrating factor job - multiply through by e^(integral of p with respect to t).
Then the LHS is d/dt (ye^(that integral)) and then it's just a matter of integrating both sides w.r.t. t and the job's done.