How can an apple ios device install an app that is downloaded from a source other than the apple app store?

Description: write function lastfirst() that takes one argument—a list of strings of the format "lastname, firstname" —and returns a list consisting of two lists: (a) a list of all the last names (b) a list of all the first names

In three to five sentences, describe how you can organize written information logically and sequentially

Click on the tab on the ribbon to open the backstage view. file view insert review