Answer :

Final answer:

The rate of change in weight for the teacher is 2 pounds per year.

Explanation:

The rate of change in weight is calculated by finding the difference in weight between 2007 and 1986 and dividing it by the number of years that passed.

In this case, the teacher's weight increased by 42 pounds (187 - 145) over a period of 21 years (2007 - 1986).

To find the rate of change, divide the weight difference by the time difference: 42 pounds / 21 years = 2 pounds per year.

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Rewritten by : Barada

Answer:

2 pounds per year.

Step-by-step explanation:

2007-1986 = 21 yrs

187-145 = 42 pounds

42 pounds /21 yrs = 2 pounds /yr