Final answer:
Dina is operating inefficiently because half of the invitations have to be thrown away due to smeared ink.
Step-by-step explanation:
In this example, Dina is operating inefficiently because half of the invitations have to be thrown away due to smeared ink. This is an example of inefficiency because she is wasting resources, time, and money. If Dina were to operate efficiently, she would invest in a new printer that produces high-quality invitations without any issues.