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25 February, 05:30

A weight loss program advertises a person can attain an average weight loss of 4 pounds per week.

(a) What is the average rate of change (in pounds per week) for this weight loss program?

(b) If a person who weighs 180 pounds follows the weight loss program, what is the person's weight (in pounds) after 5 weeks?

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  1. 25 February, 06:59
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    (a) - 4 pounds/week

    (b) 160 pounds

    Step-by-step explanation:

    Rate of Change

    (a) We know the average weight loss is 4 pounds per week. Since the average weight is decreasing, the rate of change is negative.

    The average rate of change is - 4 punds/week

    (b) If a person who weighs 180 pounds before starting the weight loss program, he will lose 4 pounds per week times 5 weeks=20 pounds.

    Thus, the person's weight after 5 weeks will be 180 - 20 = 160 pounds
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