(6%) Problem 8: A particle's position along the x-axis is described by x(t) = At+Bt, where t is in seconds, x is in meters, and the constants A and B are given below. Randomized Variables A = -2.9 m/s B = 6.3 m/s 50% Part (a) What is the velocity, in meters per second, of the particle at the time t = 3.0 s? v(t) = || m/s