Help me please If you could, please show me how you got the answer!

Answer choices:
45 cm
227.5 cm
39 cm
234 cm

Prove that (x-2)is factor of p (x)=2x³-3x²-17x+30

If i purchase a product for $79.99 and two accessories for 9.99 and 7.00 how much will i owe after taxes applies 8.75%

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