Given f(x)=-7x5 + 3x4 - 3x2 - 5x + 7 a) Use the remainder theorem and synthetic division to find f(-3).
Can someone show me how to do this?

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