You began membership in a new health and fitness club which has access to a dietician and personal trainer. They help you develop a special eight-week diet and exercise program. The data in the following table represents your weight, w, as a function of time, t, over an eight-week period. Time (weeks) 0 1 2 3 4 5 6 7 8 Weight (lb) 150 144 143 141 140 137 137 132 129 Using notation, determine the average rate of change of weight over the last four weeks of the program. (include weeks 4 and 8 in your calculations) a. -2.75 pounds per week b. +2.75 pounds per week c. -4.0 pounds per week d. +0.38 pounds per week Please select the best answer from the choices provided