Chapter 3.1, Problem 68E

(a)

To determine

To calculate: BMI of boy and determine whether he is overweight or at risk of being overweight, where the age of boy was $12$, weight was $50$ kilograms, and his height was $1.55$ meters.

(b)

To determine

Tocalculate: The rate of change of boy’s BMI at age $12$ or $b\text{'}(12)$, where the boy’s weight was increasing at the rate of $7$ kilogram per year and his height was increasing at the rate of $5$ centimeters per year.

(c)

To determine

To calculate: $b(13)$, the BMI of the child at age $13$ using the values of $b(12)$ and $b\text{'}(12)$ Determine the child at risk of being overweight when he turns $13$.