HW

Score: $75\%,9$

on $10,1\mathrm{.}5\mathrm{.}87-$LS of $12$

Part $3$ of $3$ points

Points:

$0$ of $1$

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

$w(t)=7\mathrm{.}961\mathrm{.}11t-0\mathrm{.}0049t^{2}0\mathrm{.}000351t^3,$

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.

The rate of change for the baby's weight with respect to time at age $9$ months is approximately $lb\frac{s}{?}$ month $.$

$($Round to two decimal places as needed.$)$

$$

$$

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