calculus for life science

Question

The median weight of a boy whose age is between 0 and 36 months can be approximated by the function

w(t)=8.17+1.96t−0.0091t2+0.000091t3​,

where t is measured in months and w is measured in pounds. Use this approximation to find the following for a boy with median weight in parts ​a) through ​c) below.

​a) The rate of change of weight with respect to time.

w′(t)=enter your response here

Answer 1

w'(t) = 1.96 -.0182t + .00027t^2