Answer:
Caleb was 20 inches long at birth. Today, he is 12 months old. Based on the average growth rate for newborns in North America, he is now most likely 29 inches long.
Step-by-step explanation:
The average length of babies at the time of birth in North America is 20 inches. In the first month, the baby would grow 1.5 inches longer.
On an average, it is observed that a baby would grow by an inch or 0.5 inch during each month after birth, up till a year.
It is observed that after 12 months the length of baby boys is around 29 3/4 inches and baby girls are around 29 inches.