Test of several deprecated mstyle attributes
<math xmlns="http://www.w3.org/1998/Math/MathML"> <mstyle fontsize="150%" fontweight="bold" fontstyle="italic" fontfamily="helvetica" color="teal"> <mn>2</mn> <mo>+</mo> <mi>x</mi> </mstyle> </math>
Author: Design Science, Inc. (D. Doyle)