1. We are given a graph showing a person's weight as a function of age from 0 to 70 years. 2. From ages 0 to 20, the person's weight increases sharply from near 0 pounds at birth to about 150 pounds. This likely represents normal growth during childhood and adolescence. 3. From age 20 to around 30, the weight remains stable at about 150 pounds, indicating a relatively constant weight during early adulthood. 4. At age 30, there is a sudden sharp drop in weight from around 150 pounds to about 110 pounds. This could indicate a significant event such as illness, surgery, or a major lifestyle change leading to rapid weight loss. 5. After age 30, the weight quickly increases again, reaching about 180 pounds by age 40, which might reflect recovery or new weight gain. 6. From age 40 to 70, the weight gradually increases, reaching about 200 pounds by age 70, indicating gradual weight gain in later adult years. Final summary: The person's weight steadily increases from birth, stabilizes in early adulthood, then drops sharply at age 30 possibly due to a health or lifestyle event, followed by recovery and gradual weight gain through later life.