Consider the following function: (0 for t-2 -4-2t for-2t0 x(t)=-4+3t for 0t4 16-21 for 418 0 for t8 a) Sketch the function x(t) b) Sketch the function 3x(t+1) c) Sketch the function (1/2)x(3+) d) Sketch the function -2x((t-1)/2) e) Sketch the function x(-2++1)