(1) Find the derivative of f(a) = 2x + 3 using first principles as follows: . Find f(a + h). . Calculate f(a + h) - f(x) and simplify it. . Calculate f(a + h) - f(x) and simplify it. . Now take the limit as h approaches zero, that is, limp+0 f(eth)-f(x) (2) Table 1 gives the displacement of a vehicle from the starting position. Give the average rate of change in displacement between 2 and 6 hours. TABLE 1 Time (hours) 2 4 6 8 10 Displacement (km) 160 300 520 660 720