# Why do you write functions to describe real life situations?

Jan 5, 2015

Suppose we were asked to find the volume of a balloon

we will use the function of volume for a balloon

$v \left(b a l l o n\right) =$4/3 pi r^3

$\frac{4}{3} \cdot \pi {3}^{3}$
$4 \pi \cdot 9$
$36 \pi$