Question 3 (1 point) Let the function M(t) denote the mass of bacteria culture (in mg) at time t days. The average rate of change of M(t) is 1.4 mg/day over the time interval [6, 10] and is 0.2 mg/day over the time interval [7, 10]. The average rate of change of M(t) over the time interval [6, 7] is 52 mg / day Omg / day 56 mg / day O4.7 mg / day 05 mg / day ONone of the above Question 4 (1 point) The pair of functions f (x) = x' +4, g(x) = Vx-4 are inverse of each other. ( a) True ( b) False