Which set of ordered pairs is not a function? A)(2, 3),(4,9), (3, 8), (4, 15)
B) (-9, 4), (-6, 3), (-2, 8), (0, 21)
C) (1, 2), (3,5), (6,9), (7, 11)​

The sum of two numbers is 86, and their difference is 20. find the two numbers

The number of calories you burn depends on your weight. a 110-pound person burns 163 calories during 30 minutes of tennis. find the number of calories that a 190-pound person would burn during the same activity, assuming they burn calories at the same rate.

60 musicians applied for a job at a music school. 14 of the musicians play both guitar and drums. what is the probability that the applicant who gets the job plays drums or guitar?