DreamHouse Realty (DR) employees started using company-owned airplanes for work travel after Ursa Major Solar was acquired. DR executives want to automate the submission travel request forms to enforce the Internal policy.
How should an app builder automate travel requests based on these criteria?

Cloud Kicks (CK) wants to track orders against inventory, ensuring its ability to fulfill order requests. CK created a junction object called Request Inventory to enable many-to-many relationships with the Inventory and Order objects.
What does the app builder need to provide to ensure users can view Request Inventory records?

The VP of Account Management at Universal Containers has requested that all Contacts' mailing postal codes match the associated account's shipping postal code.
How can this be enforced using validation rules?

The director of marketing has asked the app builder to create a formula field that tracks how many days have elapsed since a contact was sent a marketing communication. The director is only interested in whole units.
Which function should be used to calculate the difference?

Which components can be added to a lightning app on custom Object? (Choose three.)