For the continuous-time signals shown in Figure (4), sketch and label carefully each of the following signals that perform operations on dependent variable x (modifying the horizontal axis values). a. Time scaling of the signal p0(x) by 4 and the signal p1(x) by 8. b. Reflection of the two signals p0(x) and p1(x). c. Time-shifting of the two signals p0(x) and p1(x) such that the signal p0(x) is advanced by 0.5 and the signal p1(x) is delayed by 0.25. Figure (4) Po(x) P(x) Im 3 1 1 1 3 1