In a purchase order application, you have been asked to add an order total field that is used on multiple forms in the application. You want to make sure that whenever the input values change, the order total changes on all the forms. Which two of the following are reasons would you choose to use a declarative expression rather than a data transform to calculate the value ? (Choose two)

Classes are used to________________________. (Choose Two)

You are designing a medical claim case type and have the following requirement: Medical claims must be resolved within five days.

To meet this requirement, you must set the____________. in the service level to five days.