tyle="text-align:left;"> writing-to-a-file-3 </td>
   <td style="text-align:left;"> exercise </td>
   <td style="text-align:left;"> write_csv(x = students2, file = "data/students2.csv") </td>
  </tr>
  <tr>
   <td style="text-align:left;"> writing-to-a-file-4 </td>
   <td style="text-align:left;"> exercise </td>
   <td style="text-align:left;"> read_csv("data/students2.csv") </td>
  </tr>
  <tr>
   <td style="text-align:left;"> writing-to-a-file-5 </td>
   <td style="text-align:left;"> exercise <