The per-employee cost of insurance rose by 13% between 2015 and 2016. it then dropped by 2% between 2016 and 2017. it then increased by 17% between 2017 and 2018. by what percentage did the cost of insurance change between 2015 and 2018? (note: the answer is not 28%! )

The cost of insurance change 29,6% between 2015 and 2018.

Step-by-step explanation:

We can start by defining C as the cost of insurance in 2015.

Then, we know it rose 13% between 2015 and 2016:

It then dropped by 2% between 2016 and 2017:

And then it increases by 17% between 2017 and 2018:

We can conclude the cost of insurance change 29,6% between 2015 and 2018.

$12. that is my answer.

no i do not : ( what is it?