Pls help How many sides does this regular polygon have?

Can some one me with these questions

One positive integer is 2 less than another. the product of the two integers is 24. what are the integers

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