You are a medical assistant in a pediatrician's office and one of your responsibilities is evaluating the growth of newborns and infants. Your first patient, a baby girl
named Ivy Smith, was 21.5 inches long at 3 months old. At 8 months, you measure
her at 24 inches long. For your medical records, all measurements must be given
both in inches and in centimeters: 1 inch = 2.54 cm
1. Assuming Ivy's growth is linear, find a linear model for her growth (in inches)
over time (in months).
2. Use your model to determine how long Ivy was at birth (in centimeters)? Explain
how you know your answer is correct, assuming this model.
3. Use your model to determine approximately how tall Ivy will be at 1 year old. At
3 years old (in centimeters). Show how you know your answers are correct.
4. Use your model to estimate how old Ivy will be (in years and months) when she
measures at 48 inches. Show how you know your estimate is accurate.
5. Use the chart and table below to plot Ivy Smith's growth, based on the
calculations above (record number 1234.56).1
3. What is Ivy's approximate length-for-age percentile at each of these ages?

PLEASE HELP !!