Answer :
The chef's rate of change in weight from 1986 to 2007 was approximately 2.14 pounds per year, calculated by dividing the difference in weight (45 lbs) by the number of years elapsed (21 years).
Calculating Rate of Weight Change
The chef's weight change between 1986 and 2007 is found by subtracting the initial weight from the final weight. This difference is then divided by the number of years that passed, which gives the rate of change in weight per year.
Initial Weight (1986): 145 lbs
Final Weight (2007): 190 lbs
Years Elapsed: 2007 - 1986 = 21 years
The weight change: 190 lbs - 145 lbs = 45 lbs
Rate of Change = Weight Change / Years Elapsed = 45 lbs / 21 years ≈ 2.14 lbs/year
The chef's rate of change in weight was approximately 2.14 pounds per year.
