For each of the descriptions below, perform the follow- ing tasks: i. identify the degree and cardinalities of the relationship. ii. express the relationships in each description graphically with an e-r diagram. a. a book is identified by its isbn number, and it has a title, a price, and a date of publication. it is published by a publisher, which has its own id number and a name. each book has exactly one publisher, but one publisher typically publishes multiple books over time. b. a book (see 2a) is written by one or multiple authors. each author is identified by an author number and has a name and date of birth. each author has either one or multiple books; in addition, occasionally data are needed regarding prospective authors who have not yet published any books.

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.

Ac++an of of pi. in , pi is by : pi = 4 – 4/3 + 4/5 – 4/7 + 4/9 - 4/11 + 4/13 - 4/15 + 4/17 . ., to pi (9 ). , if 5 to pi, be as : pi = 4 - 4/3 + 4/5 - 4/7 + 4/9 = 4 – 1. + 0.8 - 0. + 0. = 3.. atoofbe to pi?

What type of forensic evidence was recovered during the bomb set off at the new mexico facility on the video that was similar to the evidence obtained at the boston bombings and how did the evidence allow the researchers to connect other pieces of evidence to the same bomb?