You cannot delete a product that is used on an opportunity

How can Chatter feed for content can be used? Choose 2 answers MMM

What is the maximum number of records to be printed in the Printable View of a list view?

What tab setting on a profile makes a tab NOT accessible on the All Tabs page or visible in any apps?

Org wide default is set to private. Kathy is assigned US Sales Director role with access rights to view opportunities owned by other users associated to her accounts. Jennifer is assigned EMEA Rep Role and Phil to US rep role. Which business opportunities can Kathy VIEW and EDIT?