Respuesta :
					                   Tuesday. The reason is it is when you multiply 9 x10 it will give you 90. So, in order to calculate that you would have to add 9 days on a calendar.
					                
					                
					             
					                   it would be on Tuesday because 10 * 9 is 90 and on Monday you add the amout of days that she practiced and that would be Tuesday. 
					                
					                
					              
					                  