22. If a particle's velocity is given by the function '06?) = 623 over the interval 2 S t g 4, what is the average velocity of the particle on that time interval? 0 1517.78 0 23.60 0 1463.18 26. Where does the sign of the concavity of the function f (x) =- 203 -3 4x change? Round to the nearest hundredth. At x = 1.26 At x = 1.32 At x = 1.40 At x = 1.44 At x = 1.73-4 -2 2 4 X 27. The figure above represents f/(x), the derivative of f (x). For which value of x does f (x) have a local maximum? Ox = -2 O x = -4 O x = -3 O x = 3 O x =0