h = 3a + 28.6
A pediatrician uses the model above to estimate the height h of a boy, in inches, in terms of the boy’s age a , in years, between the ages of 2 and 5. Based on the model, what estimated increase, in inches, of a boy’s height each year ?
A) 3
B) 5.7
Story continues below advertisement
C) 9.5
D) 14.3
