Which annotation exposes an Apex class as a RESTful web service?

An Approval Process is defined In the Expense__item__c object. A business rule dictates that whenever a ... clients the Status to Submitted on an Expense_Item__c record related to the expense report must enter the approval process individually.
A developers asked to explore if this automation can be implemented without writing any Apex code.
Which statement is true regarding this automation request?

In which order does SalesForce execute events upon saving a record?

Universal Container uses Service Cloud with a custom field, stage_c, on the Case object.
Management wants to send a follow-up email reminder 6 hours after the stage_c field is set to '';Waiting on customer'' The .... Administrator wants to ensure the solution used is bulk safe.
Which two automation tools should a developer recommend to meet these business requirements?
Choose 2 answers

Which two operations can be performed using a formula field? Choose 2 answers