Which set of ordered pairs represents y as a function of x ?

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).

Find the root(s) of f (x) = (x- 6)2(x + 2)2.

After reading 80% of her e-mails in her inbox, danette still has m unread e-mails. which of the following expressions could represent the number of e-mails danette had in her inbox before she started reading? choose 2 answers: (choice a) 5m (choice b) 1.8m (choice c) 80m (choice d) m/0.8 (choice e) m/1−0.8