Mr. hann is trying to decide how many new copies of a book to order for his students. each book weighs 6 ounces.

which ordered pair is a viable solution if x represents the number of books he orders and y represents the total weight of the books, in ounces?

(–3, –18)
(–0.5, –3)
(0, 0)
(0.5, 3)

Acertain standardized? test's math scores have a? bell-shaped distribution with a mean of 520 and a standard deviation of 105. complete parts? (a) through? (c)

Scores on a university exam are normally distributed with a mean of 78 and a standard deviation of 8. the professor teaching the class declares that a score of 70 or higher is required for a grade of at least “c.” using the 68-95-99.7 rule, what percentage of students failed to earn a grade of at least “c”?

20 points + brainliest answer + my mom’s chocolate chip cookie ! subtract.