The following graph is called a circle graph or a pie chart. The circle represents a whole, or in this case, 100%. This particular graph shows the number of minutes per day that people use e-mail at work. Use this graph to answer what percent of e-mail users at work spend less than 15 minutes on e-mail per day? Time Spent on E-mail at Work More than 5 hours Less than 15 minutes 2:13 hours 9% 10% 1-2 hours -8% 50% ​