I've developed the following algebraic equation which could probably be simplified further. Also, I need it reorganized to solve for x and Y (in terms of A, x, and Y. Not looking for a numerical answer to x or Y). Any takers?
$ A=0.0193(\frac{x+0.05}{0.05})^2+0.0876(\frac{x+0.05}{0.05})+(\frac{Y}{0.2}(0.75+0.028(\frac{x+0.05}{0.05})))+1.356 $