Find the specific solution to the following first-order differential equations with the provided initial conditions. (a) y(t) = yl/3(t) (1 + 12), y(0) = 1 (b) x dz = z (1 - 4z), z(1) = 2 d.x (c) x'(t) + 3.x(t) = x(t)t', x(-1) = -3