Question

12. A teacher weighed 148 lbs. in 1999 and weighs 190 lbs. In 2020. What was the rate ofchange in weight?

Answer 1

Given,

The weight of the teacher in 1999 is 148 lbs.

The weight of the teacher in 2020 is 190 lbs.

The rate of change in weight is,

`\begin{gathered} \text{Rate of change=}(190-148)/(2020-1999) \\ =(42)/(21) \\ =2 \end{gathered}`

The teacher gained 2 pounds per year.

Hence, option A is correct.