Which of the following is an example of a business using a database to retrieve and display information?
a.
the flight attendant directs you to view the safety information on the overhead tv screen.
b.
the checker at the grocery store scans your item and the price appears on the screen.
c.
the monitor on the exercise bike at the gym automatically displays your heart rate.
d.
the real estate agent displays a multimedia slideshow of homes for sale.

What is the digital revolution and how did it change society? what are the benefits of digital media?

1. ask the user how many questions are in the quiz. 2. ask the user to enter the key (that is, the correct answers). there should be one answer for each question in the quiz, and each answer should be an integer. e. g., 34 7 13 100 81 3 9 10 321 12 might be the key for a 10-question quiz. you will need to store the key in an array. 3. ask the user to enter the answers for the quiz to be graded. there needs to be one answer for each question. note that these answers do not need to be stored; each answer can simply be compared to the key as it is entered. 4. when the user has entered all of the answers to be graded, print the number correct and the percent correct. 5. add a loop so that the user can grade any number of quizzes with a single key. after the results have been printed for each quiz, ask "grade another quiz? (y/n)." note: you only have one array (the key). you are not creating a new key for each set of quiz answers.

Atype of researcher who uses computers to make sense of complex digital data