Hi ProStatistician, you helped me solve an exercice with state on October 29, 2016. If you have time, I would like to ask you some explanations.

Hi ProStatistician, you helped me solve an exercice with state on October 29, 2016. If you have time, I would like to ask you some explanations. For the questions 8- Add YPC to the model you’ve selected in task 7 and re-run it.  and 9-Re-run the model in task 8 by including the supply-side measures as additional explanatory variables, since the ask me to select the model in task, should we still use the command "no constant" for these questions? Could you very that for me please? Thanks in advance.