tyle: italic; font-weight: 400; color: rgb(0, 0, 0);">l</span><span> is the number of leisure hours remaining as a function work hours</span></li><li  class = 'S3'><span style="font-family: STIXGeneral, STIXGeneral-webfont, serif; font-style: italic; font-weight: 400; color: rgb(0, 0, 0);">u</span><span> is the overall level of utility as a function of work hours.</span></li></ul><div  class = 'S1'><span>Or you might potentially want to use superscripts:</span></div><div  class = 'S1'><span texencoding="y =