Final answer:
Barry's weight increased from 145 lbs in 2006 to 190 lbs in 2020, which calculates to an average annual rate of change of approximately 3.21 lbs/year over the 14-year period.
Step-by-step explanation:
The question asks to calculate the rate of change in Barry's weight from 2006 to 2020. To find the rate of change, you subtract the initial weight from the final weight and then divide by the number of years that have passed. Barry weighed 145 lbs in 2006 and 190 lbs in 2020. The number of years between 2006 and 2020 is 2020 - 2006 = 14 years.
Therefore, the rate of change in weight is (190 lbs - 145 lbs) ÷ 14 years = 45 lbs ÷ 14 years = 3.21 lbs/year (approximately). Barry's weight increased at an average rate of about 3.21 pounds per year over the 14-year period.
The number of years between 2006 and 2020 is 2020 - 2006 = 14 years. Therefore, the rate of change in weight is 45 lbs / 14 years = 3.21 lbs per year.