h= 3a + 28.6 A pediatrician uses the model above to estimate the height b 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 is the estimated increase, in inches, of a boy's height each year?
Solution
Correct Answer: Option C
বয়স 2 হলে উচ্চতা h= 3×2 + 28.6= 34.6 ইঞ্চি
আবার, বয়স 3 হলে উচ্চতা h= 3×3 +28.6 = 37.6 ইঞ্চি
∴ 1 বছরে বৃদ্ধি পায় (37.6- 34.6) = 3 ইঞ্চি