The figure shows the velocity of an object for 0 ≤ t ≤ 24. Calculate the following estimates of the distance the object travels between t = 0 and t = 24, and indicate whether each result is an upper or lower estimate of the distance traveled. (a) A left sum with n = 2 subdivisions NOTE: Enter units that match those on the graph. The distance traveled is estimated to be This is (b) A right sum with n = 2 subdivisions. NOTE: Enter units that match those on the graph. The distance traveled is estimated to be This is