# Math Help - Working with powers

1. ## Working with powers

I am trying to figure out this progression from a book I am reading and not having a lot of luck.

A is proportional to B^2.8

A is proportional to B x C^2

Therefore A is proportional to C^3.1

2. ## Re: Working with powers

You have to be more clear with your notation:
$A$ is proportional to $B^{2,8}$
$A$ is proportional to $B\cdot C^2$
Therefore $A$ is proportional to $C^{3,1}$
Is this the exercice?

3. ## Re: Working with powers

My apologies, yes that is the exercise.

4. ## Re: Working with powers

I think this is gives the solution

5. ## Re: Working with powers

Aha, Thank you PASCALfan, now I can see where I was going wrong, again thank you very much.