How to incert linear equation and trend line in scatter plot in matlab?

How can smart devices benefit businesses, organizations, and social communities in the global marketplace?

Can someone work out the answer as it comes up in one of my computer science exams and i don't understand the cryptovariables

Create a file called favorite_foods, and list your favorite foods, entering five or six or more. press enter after each favorite food so it appears on its own line (make certain you also press enter after the final food item). after the file is created, add two more foods you like that are not on the list (press enter after the final food item). view the list of foods to make certain the two items you added appear at the end of the list