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) O 1 12 3 4 15 16 17 18
Weight (lb) 150 144 143 141 (140 137 137 132 129
Write the ratio of the change in weight for the first five weeks to the change in time for the first five weeks. Interpret the
meaning of this ratio.
a. -13
5
5 pounds was lost in 13 weeks
b. 5
13
13 pounds was gained in 5 weeks
c. -13
5
13 pounds was lost in 5 weeks
d.
5
-13.5 pounds was lost in 13 weeks
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