Sara has been trying to make sense of the growth chart her son’s pediatrician has shown her during the last visit. The doctor even gave her a copy to take home so that she can track her son’s growth. At the time of the last visit, 2 months ago, Alistair was at the 75th percentile for length-for-age and at the 25th percentile for weight-for-age. Today is Alistair’s second birthday, and he is just shy of 35.5 in. tall and weighs 28 lb. Is Alistair growing at the same rate? Using the appropriate growth, chart find out the length-for-age and weight-for-age percentiles for Alistair.

The growth charts can be accessed at the Centers for Disease Control and Prevention (CDC) website or under Hints A1 and A2.

PART B
Sonia, who is approaching her third birthday, has always been a small child. It's not surprising since both of her parents are rather short and of a delicate stature. She has been in the 10th percentile for both length-for-age and weight-for-age since birth. What is Sonia’s expected weight on her third birthday if she is maintaining her growth pattern?

The growth charts can be accessed at the Centers for Disease Control and Prevention (CDC) website or under Hints B1 and B2.